Baby Sleep Training Methods 2026: An Honest Comparison
Sleep training is one of the most emotionally charged topics in parenting. The debate generates strong opinions that often have more to do with parenting philosophy than evidence. This guide presents what the research actually shows, then lets you choose based on your values and circumstances.
Before You Start: Prerequisites
Sleep training is not appropriate before these conditions are met
Minimum age: 5–6 months. Before this, the circadian rhythm is not sufficiently developed for sleep training to be effective or appropriate.
Weight: Most guidelines suggest at least 6–7kg (13–15 lbs). Smaller babies may still need night feeds for nutritional reasons, always confirm with your paediatrician before eliminating night feeds.
Health: Sleep training during illness, developmental regression, or a major change (house move, new daycare) is less likely to work and more distressing. Wait for a settled period.
Consistent routine: Sleep training works best when there's already a consistent bedtime routine in place. If you don't have one, establish it for 1–2 weeks before starting training.
Extinction ("Cry It Out" / CIO)
How it works: Put baby down awake at bedtime. Leave the room. Do not return until morning (or a defined night feed time). Baby cries, eventually falls asleep, and learns to self-settle over 3–7 nights.
What the research shows: Extinction is the most-studied sleep training method. A landmark 2016 Flinders University study found it safe with no negative effects on attachment, stress hormones, or emotional/behavioural outcomes at 5-year follow-up. A 2012 Cochrane review confirmed effectiveness. It is the fastest method.
Who it works for: Parents who can tolerate several nights of significant crying, who have checked all prerequisites, and who want the fastest resolution. Not for parents whose values don't align with leaving baby to cry without response.
Ferber Method (Graduated Extinction)
How it works: Put baby down awake. If baby cries, wait a defined interval before returning to briefly check in (pat, verbal reassurance. no picking up). Intervals increase each night: Day 1: 3/5/10 min, Day 2: 5/10/12 min, Day 3: 10/12/15 min, etc.
What the research shows: Equally effective as extinction in outcome; slightly slower (typically 7–14 nights). Some parents find the check-ins make crying worse by re-stimulating baby. Others find it more manageable emotionally.
Who it works for: Parents who want to check on baby but are committed to not picking up. Note: if check-ins consistently escalate crying, consider either extinction or a gentler approach.
Fading / Chair Method / Camping Out
How it works: Sit next to baby's crib until they fall asleep, providing reassurance but not picking up. Each night (or every few nights), move your chair slightly further from the crib. Over 2–4 weeks, you're progressively further away until you're outside the room.
What the research shows: Slower than extinction methods but equally effective in outcome. Lower levels of crying overall. Some babies find parental presence stimulating (why aren't you picking me up?), if this is the case, absence may work better than presence.
Who it works for: Parents who cannot tolerate leaving baby without presence, but who are consistent and patient. Requires 2–4 weeks of commitment.
No-Cry Methods
How it works: Gradual removal of sleep associations. If baby always feeds to sleep: break the association by feeding earlier in the routine, then using patting/singing to finish the settling. Over 2–6 weeks, gradually reduce the settling input until baby can self-settle.
What the research shows: Less studied than extinction methods, but generally effective over longer time frames. Works best when implemented very consistently.
Who it works for: Parents philosophically opposed to crying, parents of highly sensitive babies, and families where attachment parenting principles are important. Requires the most time and consistency.
How to Choose Your Method
| Method | Speed | Crying | Parental presence | Best if... |
|---|---|---|---|---|
| Extinction | 3–7 nights | High initially | Minimal | You want the fastest resolution and can manage the crying |
| Ferber | 7–14 nights | Moderate | Brief check-ins | You want to check in but won't pick up |
| Fading/Chair | 2–4 weeks | Low-moderate | Gradual removal | You need to be present but will slowly withdraw |
| No-Cry | 2–6 weeks | Minimal | Full presence | Any crying is a non-starter for you philosophically |
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