Most sleep coaches say the ideal time to start sleep training (or promote independent sleep, not necessarily using the cry-it-out method) is based on your baby’s development, but is usually somewhere between four and six months, when your baby hasn’t had much time to get used to nursing or rocking to sleep. At this stage, most babies are also developmentally ready to learn the skill of falling asleep on their own, explains Jennifer Garden, an occupational therapist who runs Sleepdreams in Vancouver. Around four months of age, some babies go through a sleep regression because their sleep cycles change and there are longer periods of lighter sleep per cycle. “It’s a great time to work on independent sleep skills,” says McGinn. Other babies’ slumber derails around this time because they are working on new skills, like moving around and rolling. Some parents choose to wait until things settle down before embarking on a sleep-training method, but you don’t have to, says McGinn.
The idea behind extinction (or full extinction to differentiate it from graduated extinction) is that you want to extinguish the behaviour (crying) by not responding to it. As with the check-and-console method, go through your bedtime routine, put them in their crib awake, say good night and walk out. This is certainly the most controversial sleep-training method, and even experts disagree on what you should do next—it all depends on what stage your baby is at developmentally, as well as what works for the parents.
Crying isn't the goal of this sleep training method, but advocates say it's often an inevitable side effect as your baby adjusts to sleeping on his own. They say the short-term pain of a few tears is far outweighed by the long-term advantages: A child who goes to sleep easily and happily on his own, and parents who can count on a good night's rest.
This is another gentler technique. The PUPD method works just the way it sounds: when it’s time to sleep, and your baby is fussing or crying in his crib or bassinet, you pick him up and comfort him until he’s calm and drowsy. Then, you put him back in his crib to sleep, repeating this cycle until your baby is finally asleep. PUPD is another method that requires quite a bit of patience, depending on your baby, and it won’t work for every baby; some babies find being picked up and put down so often over-stimulating, and they gradually become frustrated and worked up, instead of relaxed.
I have a 5 month old girl who has been inconsolable when it’s has come to going to sleep, whether it be nap time or bedtime. Up until 6 weeks ago she was very good at self soothing, where I’d put her down drowsy/almost asleep, put on some soothing music and she’d toss and turn for a few minutes and fall asleep. Initially I thought it was the famous 4 month sleep regression but now it’s starting to get out of hand. Just to note, she used to sleep about 30-45 minutes and occasionally longer. She seemed happy and content when she woke so I assumed she had had enough rest, although I would’ve preferred longer naps. Also to note, She currently sleeps anything up to 8 hours at night and wakes for a feed around 3-5am.
Melissa incorporated the Zen Sack into her bedtime routine with Theo because the gently weighted center of the Zen Sack helps to calm babies and aids in teaching them to self soothe- which is what sleep training is all about! The gently weighted center actually mimics your touch offering comfort and security to your baby, even when you’re not there. The extra bit of pressure from the Zen Sack has been shown to help babies feel calm and fall back to sleep easier...super helpful for starting sleep training!

Honestly, in our personalized consultations, we try to avoid this method as much as possible. If you are going to use cry it out, we recommend your baby is at least 6 months old, but preferably 10 months or older, when we expect almost all babies to be able to get through the night without a feeding. It is not for the faint at heart. We find that laying a foundation in the beginning with other strategies and techniques can reduce crying even if this method is used in the end, however.
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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