"My first daughter was sleeping through the night (10 p.m. to 9 a.m.) by 6 months. We had a complete bedtime routine: a bath, a book, a bottle, then to bed, a little music in the crib, and asleep in 10 minutes. It was wonderful, but that scenario didn't work for my second daughter and hasn't worked for my son, so I've tried different things for each of them. Sometimes a plan doesn't work. Listen to your baby – he or she will tell you what you need to know."
• DIY methods work. Don’t love the rigidity of a particular method? Modify it to suit your own family’s circumstances. Sometimes, a sleep coach can be helpful to come up with modifications that won’t affect the goal of getting baby to sleep through the night, but it’s fine to mix and match until you find a strategy you’re comfortable with. “I don’t think I’ve ever loved and loathed anything as much as I do sleep training. We did it with my son because he was still waking up every three hours at 3.5 months old, and I felt it was more out of habit,” says Margaret, a mom of one. “My husband and I decided that we valued teaching him self-soothing and that in the long run it was worth some short-term effort. I did a ton of research and came up with our own plan—similar to Ferber, but our time limits of letting him fuss weren’t as rigid. It worked, and he’s been a solid sleeper since.”
Most experts recommend starting when your baby is between 4 and 6 months old. By about 4 months, babies have typically started to develop a regular sleep-wake cycle and dropped most of their night feedings. These are signs they may be ready to start sleep training. Many babies this age are also developmentally able to sleep for long stretches at night.
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.