Nicole Johnson is the founder and lead sleep consultant of The Baby Sleep Site®. Since she began in 2008, and with the help of her team of sleep consultants, she has helped over 40,000 families improve their sleep. She has also held a position on the board of the International Association of Child Sleep Consultants (IACSC) since 2015. Millions of visitors land on The Baby Sleep Site each year, and Nicole and her team are here to find solutions for your family’s sleep problems that will match your baby's temperament and your parenting style.
C.I.O. is the most famous sleep training technique, and the most controversial — although, despite its daunting name, it is safe and effective. In its simplest form, unmodified extinction, you place your infant down at bedtime, drowsy but awake, and then leave the room, without returning to check on or soothe your baby. This method will work quickly, but often produces prolonged periods of crying for a few nights, which can be difficult for parents to tolerate.

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Though many of the parents I see in clinic have put up with terrible sleep for years, sleep training is a safe and effective tool to help babies learn to soothe themselves at night. For this guide, I reviewed the literature on infant sleep. As director of the Pediatric Sleep Center at Yale University, I have extensive experience helping families to address sleep problems. I have also written a book on the topic, which was inspired by sleepless nights with my own children.
For my wife and me, those early days passed in a blur. Nights seemed endless, and no government ordinance was about to come along to shorten our shifts. When he was around 3 months old, our son started sleeping for longer periods and our relief was profound. But after about a month, the baby started waking up at night again. After one nightly waking became two, then three and four, I realized it was time to sleep train our son.
12 baby-sleep tips for exhausted new parents Before you even think about “training” your baby to fall asleep on their own, make sure you’re following a regular schedule and putting them to bed at a consistent time each night (hint: early is usually better, typically around 7 or 8 p.m.). Starting at about two months old, it’s a good idea to try to put them down drowsy but awake whenever you can, just to get them (and you) used to it, even if they fuss a bit. Make sure that they’ve been awake for an appropriate amount of time before bed (an over- or under-tired baby will have trouble falling asleep), and establish a calming and consistent bedtime routine, like a feed, bath or massage followed by pyjamas and stories or songs. Some experts recommend feeding at the beginning of the routine to avoid having the baby associate the feeding with falling asleep. Ideally, your baby won’t have started to nod off at any point during your bedtime routine. “You really want to make sure your baby is primed for sleep,” says Pamela Mitelman, a psychologist in Montreal who specializes in infant and child sleep. Be conscious, too, of filling their daytime awake periods with enough activity and stimulation, says Garden. “Kids need to be moving in all sorts of ways when they are awake, not just sitting in a bouncy chair,” she says.
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