Typically, formula-fed infants who are growing well no longer need to feed at night by 6 months. Breastfed infants may continue a little bit longer, but typically no longer feed at night by 9 months. If your baby has been falling asleep independently at bedtime for a month but still waking to feed, you may want to consider weaning at night. Be aware that if you are breastfeeding, this may lead to a reduction in milk supply.
Create a comfortable sleep environment that's tailored to your child. Some babies need more quiet and darkness than others. Recordings of soft music or nature sounds or the sound of a gurgling aquarium can be soothing. Make sure the sheets are cozy (warm them with a hot water bottle or a microwavable heating pad, for example, before laying your baby down) and that sleepwear doesn't chafe or bind. Younger babies may sleep better when swaddled. Don't overdress your child or overheat the room.
• Ferber method. Also known as timed-interval sleep training, modified sleep training or graduated extinction sleep training, parents using this method put baby down to sleep even if he’s crying, then return to check on him at different time intervals —every five, 10 and 15 minutes, and so on. You don’t pick baby up during these checks but can verbally soothe or pat him. Gradually, the intervals will get longer until eventually baby is sleeping through the night. “We did Ferber once my son was 8 months old. He got the hang of it pretty quickly and has been sleeping on his own for 10 to 12 hours ever since,” says Anika, a mom of one.
“I always say bedtime and nap routines can start from day 1. A child is never too young to learn healthy sleep habits and routines! But to get a baby sleeping through the night there are a few things I check. The baby should be at least 15 lbs, no medical concerns, and on a healthy growth curve approved by their pediatrician. If all these points are met, then I'm ready to start getting that little one sleeping through the night!"
"By the time your baby is 3 months old and has developed a fairly predictable 24-hour pattern, it becomes more important for you to provide increasingly consistent structure. If you do your best to establish a reasonable and consistent daily routine and keep to it as much as possible, then it is likely that your child will continue to develop good patterns. If instead you allow the times of your child's feedings, playtimes, baths, and other activities to change constantly, chances are his sleep will become irregular as well."
Sleep training means using behavioral techniques to teach your baby to sleep independently by altering her “sleep onset associations” — or the circumstances your baby needs to fall asleep at bedtime. By removing your presence at bedtime, you are providing new associations with the result that she will learn to fall asleep independently, both at bedtime and when she awakens during the night.
"My 4-and-a-half-month-old will only sleep through the night if we do everything the experts say not to do. She must be nursed to sleep unless we want to see her turn purple and cry for 45 minutes or more. She's like a wind-up doll when she starts and never settles until she's comforted, and she's been that way from the beginning. It really became a matter of, "Do we want to sleep, or do we want to do what the books say?" If she's comforted and put down sleeping, she sleeps eight to 10 hours. To all you parents out there who have a baby like mine, do not despair – just do what works for you."
The age of your baby might determine what kind of sleep-training method you choose, though. You could try a gentle shush-pat technique with a five-month-old, but you’ll likely have to leave a one-year-old in the crib as they protest (cry or scream) about the new bedtime arrangement. Don’t attempt a formal sleep-training method before four months, until your baby is able to go longer in between feeds and their circadian rhythm starts to develop. (Many babies this age still feed in the night—contrary to popular thinking, sleep training isn’t synonymous with night weaning.) Dickinson says that many four-month-old babies are biologically able to go through the night without a feed, but that doesn’t mean you shouldn’t respond and feed them if other methods of calming them aren’t working. Since every situation is different, we recommend checking with your doctor before withholding your baby’s night-time feeds.