Complete guide to sleep training

You’re running on three hours of broken sleep. You’ve Googled “sleep training” at 2am more times than you can count. And every time, you end up more confused — not less..

Does this sound familiar? Personally for us, this was the case at around the turn of the fourth month and our infant started waking more regularly in the wee hours. Being working parents, this definitely took a toll on our mental and physical capacity. When looking for solutions on the internet, we came across this term “sleep training” and we took the plunge. After being on this sleep training for 3 months now, we can confidently declare: sleep training works. Decades of research back it up. But there’s no single “best” method — the right one is the one that fits your baby, your parenting style, and your family.

This guide breaks down every major sleep training method in plain English. By the end, you’ll know exactly which one to try — and how to start tonight.

What exactly is sleep training?

Sleep training is the process of teaching your baby to fall asleep independently — without being rocked, fed, or held to sleep every single time.

When a baby knows how to self-soothe, they can also resettle themselves when they wake between sleep cycles at night. That’s what “sleeping through the night” actually means.

What sleep training is NOT:

• Ignoring your baby’s genuine needs
• Stopping night feeds before your baby is ready
• A one-size-fits-all process
• Cruel or harmful to your baby’s development

The American Academy of Pediatrics (AAP) supports sleep training and confirms it does not harm a baby’s emotional development or attachment to parents. Multiple long-term studies show no negative effects on stress hormones, behaviour, or parent-child bonding.
The goal isn’t to get your baby to never cry. It’s to help them learn a skill — falling asleep on their own — that benefits the whole family.

When should you start sleep training?

Most paediatricians recommend starting sleep training between 4 and 6 months of age.

• Before 4 months, babies’ sleep cycles aren’t fully developed
• Around 4–6 months, most babies can go 6–8 hours without a feed
• Babies this age can start learning self-soothing skills

Can you start later? Yes. Sleep training at 8, 10, or even 12 months is absolutely possible — it may just take a little longer as habits are more established. Can you start earlier? Before 4 months, structured sleep training isn’t recommended. But you can start laying the groundwork: put baby down drowsy-but-awake, establish a consistent bedtime routine, and differentiate day from night.

Signs Your Baby Is Ready:

• Weighs at least 12–13 lbs (5.4–5.9 kg)
• Can go 4–5 hours between night feeds
• Has no underlying medical issues (reflux, illness, etc.)
• Is settling into a rough day nap schedule Note:
  Always check with your paediatrician before starting sleep training, especially if your baby was premature or has any health concerns.

For us personally, we never knew whether our baby could go 4-5hours between feeds as he was waking every hour or so. It was so bad that we decided to just place him on our bed between us because it became such a hassle to get up and walk over to the cot to soothe him. We also kept giving him milk whenever he cries as we thought he could become milk drunk and return back to sleep quicker. These are all wrong approaches, that we will explain below.

The 6 Main Sleep Training Methods Explained

There’s no shortage of sleep training approaches. Here are the six most widely used, from most to least crying involved.

Cry It Out (CIO) / Extinction Method

You put baby down awake after their bedtime routine, then leave the room and don’t return until morning (or until a set night-feed time). You do not respond to crying.
The reality: This sounds brutal, but most babies cry hard for 1–3 nights, then the crying reduces dramatically. By night 5–7, many babies put themselves to sleep with minimal or no fuss.
Best for: Parents who can handle a few tough nights in exchange for fast results. Also works well for babies who escalate more when a parent keeps appearing and disappearing.

The Ferber Method/Graduated Extinction

You put baby down awake, then leave. If they cry, you return at set intervals to offer brief, calm reassurance — but you do NOT pick them up. Intervals increase over several nights (e.g., 3 mins, then 5, then 10).
The reality: Ferber is often misunderstood as “cry it out.” It isn’t — you do go in to check. However, some babies actually cry more when a parent appears and leaves again. Watch your baby’s cues.
Best for: Parents who want structured check-ins and find pure CIO too difficult.

The Chair Method (Sleep Lady Shuffle)

You sit in a chair next to the crib while baby falls asleep. Every few nights, you move the chair further away — across the room, to the doorway, outside the room — until you’re no longer present.

The reality: This is one of the gentler methods, but it takes longer. Some babies find a parent sitting nearby more frustrating, not less as they see you sitting there “doing nothing” and aren’t picking them up which is worse than if you weren’t there at all.
Best for: Parents who want to stay present while gradually reducing their involvement. Works well for older babies and toddlers.

The Pick-Up/Put-Down Method

When baby cries, you pick them up and soothe them. As soon as they calm, you put them back down. Repeat as many times as needed. The idea isn’t just to stop the crying; it’s to break the sleep association between being held/rocked and falling asleep. This is generally considered as the “middle ground” of sleep training.
The reality: This sounds gentle, but for many babies — especially under 7 months — being repeatedly picked up and put down is overstimulating and actually increases crying. It requires enormous patience and can take weeks.
Best for: Younger babies (4–6 months) and parents with very high patience thresholds.

The Fading Method (Bedtime Fading)

You gradually reduce the “sleep prop” your baby currently relies on. For example, if you rock your baby to sleep, you rock slightly less each night until you’re barely rocking, then you stop. If you nurse to sleep, you shift the feed earlier in the routine.
The reality: Slow and steady. Fading respects your baby’s current associations while gently shifting them. It’s not fast, but it can feel very manageable.
Best for: Parents who want to avoid almost all crying. Also good for babies with anxious temperaments.

No-Tears / Gentle Sleep Training

An umbrella term for approaches that focus on co-regulation—using the parent’s presence to calm the baby’s nervous system—rather than leaving a child to self-soothe alone. It is a “fading” process where you slowly reduce your physical support over several weeks.

The Difference: While similar to the Chair Method, “No-Tears” is more fluid and hands-on; you stay actively engaged by patting or shushing to stop all crying immediately. In contrast, the Chair Method is a distance-based exit plan where you sit nearby but intentionally limit your physical touch to let the baby lead the settling process.

The reality: This is a “slow-burn” strategy. It requires extreme parental patience and an iron-clad commitment to consistency. Because you are always present, the baby may take much longer to grasp independent sleep than they would with more direct methods.
Best for: Families who are philosophically opposed to any form of “Cry It Out” and have the time and energy for a gradual, month-long transition.

How to choose the right method for your family

To choose the right method, we personally went through these questions and chose the one that fits us best.

1. How much crying can I handle? If you will cave after 10 minutes every time, CIO won’t work — pick a gentler method and commit to it fully.
2. How quickly do you need results? If you’re back at work in a week, faster methods matter.
3. What’s my baby’s temperament? Spirited babies often do better with CIO (check-ins escalate them). Sensitive babies may do better with fading.
4. Are both caregivers on board? Consistency is everything. If you and your partner disagree, the method will fail — talk it through first.
5. Does your baby have any medical issues? Reflux, ear infections, or developmental concerns warrant a chat with your GP before starting.

We couldn’t bear the thought of letting our little one cry indefinitely, so we opted for the ‘middle ground’ with the pick-up/put-down method. With the guidance of a fantastic sleep trainer, we started when our son was four months old—right as he began waking up every hour. At the time, we were constantly offering milk to pacify him, though we suspected it wasn’t the best long-term solution.

The transition was incredibly tough. Learning to let him settle on his own meant enduring 20 to 30-minute stretches of fussing before picking him up to soothe him. We also had to implement a strict schedule for naps, bedtime, and feedings, which was a huge change from our previous ‘go with the flow’ approach. On our trainer’s advice, we even weaned him off his pacifier to avoid a harder struggle later on.

Those first few nights were brutal. We spent hours shushing and patting him to sleep without the comfort of his pacifier. Distinguishing between genuine hunger and ‘comfort sucking’ was a steep learning curve, but breaking that sleep association was vital. Thankfully, we saw progress within just a few days as he settled into his new routine. Once the schedule was set, it became much easier—now, it’s just about maintaining that consistency.

Step by Step: How to Start Sleep Training This Week

Regardless of which method you choose, the foundation is the same. However, we must caveat that there will be different nuances for different babies and we will highly recommend you to our sleep coach should you need one. Do reach out to us!

Step 1: Set a consistent bedtime

Pick a time between 6:30pm and 8:00pm and stick to it every night. Overtired babies fight sleep harder.

Step 2: Build a predictable bedtime routine

20–30 minutes of calm, wind-down activities in the same order every night. For example:

• Bath
• Nappy change and pyjamas
• Feed (not to sleep — feed before the last step)
• Book or song
• Into the crib awake

A consistent routine signals baby’s brain: sleep is coming.

Step 3: Set up the sleep environment

• Dark room — use blackout blinds
• White noise — 60–65 dB, run all night (not just while falling asleep)
• Safe sleep setup — firm, flat mattress, no loose bedding (AAP safe sleep guidelines)
• A baby monitor is helpful so you can check without entering the room

Step 4: Put baby down awake

• This is the single most important step. Baby must be awake — not drowsy, not half-asleep — when placed in the crib. This is how they learn to fall asleep without you.

Step 5: Follow your method consistently Whatever method you’ve chosen, follow it the same way every night. Inconsistency is the number one reason sleep training fails.

Step 6: Track progress Keep a simple log: what time baby went down, how long they cried, when they woke at night.

Most families see meaningful improvement within 5–7 nights. If you’re not seeing any improvement after 2 weeks, it’s worth consulting a paediatric sleep consultant.

Sleep Regressions: Will They Undo Your Progress?

Sleep regressions — the 4-month, 8-month, 12-month, and 18-month regressions — are real. They happen as your baby’s brain develops rapidly, temporarily disrupting sleep.

The good news: if your baby already knows how to self-soothe, regressions are usually brief. They might wake more often for 1–2 weeks, but quickly return to sleeping well.

If your baby hasn’t been sleep trained, a regression can feel endless — because they don’t have the self-soothing tools to get back to sleep on their own.

Don’t avoid sleep training because of a regression. Wait until it passes (usually 2–4 weeks), then start your sleep training plan.

Frequently Asked Questions

Q: Is sleep training safe?
A: Yes. The AAP supports behavioural sleep training. Multiple peer-reviewed studies over 20+ years have found no evidence of harm to babies’ emotional development, cortisol levels, or parent-child attachment.

Q: Will sleep training damage my bond with my baby?
A: No. Research shows that sleep-trained babies show no differences in attachment, stress, or emotional development compared to non-sleep-trained babies. In fact, better sleep often strengthens the parent-child relationship — because
everyone is more rested.

Q: How long does sleep training take?
A: Most families see significant improvement within 5–7 nights. Full, consistent results typically come within 2 weeks. Gentle methods can take 3–4 weeks.

Q: What is the hardest night of sleep training?
A: Usually night 1 or 2. Crying typically peaks early and decreases significantly by night 3–5.

Q: Can I sleep train a breastfed baby?
A: Yes. Sleep training and breastfeeding are completely compatible. You can continue night feeds if needed — the goal is teaching your baby to fall asleep independently, not to stop feeding altogether.

Q: What if my baby is sick?
A: Pause sleep training when your baby is genuinely unwell. Comfort them as needed. When they recover, restart your plan — you may need a day or two to “reset” but progress usually returns quickly.

Q: What is the 5-3-3 rule for baby sleep?
A: It’s a loose framework: 5 hours of night sleep, then 3 hours, then 3 hours. It’s not a medical guideline — it’s just a description of one common pattern in early infancy before babies consolidate sleep. Once sleep training works, most babies surpass this.

Q: Do I need to hire a sleep consultant?
A: Most families don’t need one. A good guide (like this one) gives you what you need. That said, if you’ve tried multiple methods consistently for 3+ weeks with no improvement, a certified paediatric sleep consultant can help identify the specific issue. We have a good contact if you need, do reach out to us!