An Age-by-Age Guide to Sleep Training (2024)

Wondering when to start sleep training? While the ideal timing differs for every child, these expert-approved suggestions can serve as a guide.

Updated on September 1, 2023

Medically reviewed byAngela Holliday-Bell, MD, CCSH

An Age-by-Age Guide to Sleep Training (1)

Parents often wonder when to sleep train their little one—but as it turns out, the answer isn't clear cut. "There are good times to sleep train and periods when it may be less likely to work," says developmental psychologist Isabela Granic, Ph.D., coauthor of Bed Timing: The 'When-To' Guide to Helping Your Child to Sleep. "This is because infants and toddlers go through mental growth spurts that make them especially clingy, fussy, and prone to night wakings. They're learning new cognitive skills and often don't sleep as well."

Keep reading for Dr. Granic's explanations of what's happening developmentally as your baby grows, and how to choose the best month to introduce sleep training.

Newborn-2.5 Months

Newborns can't tell the difference between night and day because they don't produce enough melatonin. They also require frequent night feedings. Because of this, parents should hold off on sleep training for now.

3-4 Months

By 3 to 4 months, infants are forming a nighttime sleep cycle. They're more sociable, don't usually suffer from separation anxiety, and start snoozing better. However, most 3- and 4-month-olds aren't developmentally ready to self-soothe, so sleep training may be difficult.

4.5-5.5 Months

Most experts recommend sleep training around this time, when babies can make it 6 to 8 hours without feeding overnight. But keep in mind that your little one is learning that crying gets a response from you—so expect plenty of waterworks when you leave the room!

6-8 Months

Babies are more interested in reaching for toys than keeping their eyes fixed on you. If you're thinking about sleep training, Dr. Granic says to go for it. As a bonus, your baby may not be as fussy when they wake at night.

9-11 Months

At 9 to 11 months, an infant starts understanding that parents still exist after they leave the room. Knowing you're just outside the door can spark tears, so sleep training can be frustrating. There's nothing stopping you from trying, though.

12-16 Months

As toddlers focus on developing speech and physical skills, they're less clingy with Mom and Dad. This is another good time to sleep train, says Dr. Granic.

17-21 Months

It sounds counterintuitive, but a child's budding independence makes them more needy. Hold off on sleep training for now.

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An Age-by-Age Guide to Sleep Training (2024)

FAQs

An Age-by-Age Guide to Sleep Training? ›

Sleep training considerations. Experts typically recommend starting newborn sleep training after the 4th trimester, between 4-6 months of age. By 4 months old, most babies can sleep for six hours between feeds overnight. By 6 months, most children can sleep through the night.

What is the 5 3 3 rule for babies? ›

The 5 3 3 rule is a sleep training method that involves setting specific intervals for sleep. The method involves having the child sleep for 5 hours, followed by 3 hours of awake time, and then 3 hours of sleep again.

What is the ideal sleep training age? ›

Age Appropriate: It's advisable to start sleep training when your baby is developmentally ready, typically around 4-6 months.

What is the 5 10 15 method? ›

The method is also known as "check and console," and "graduated crying it out." The Ferber method has been shown to be safe and effective for babies. To use it, you'll follow a schedule that involves set periods of crying – for example, five minutes, then 10, then 15 – over a week.

How do you know when your baby is ready for sleep training? ›

Signs that your baby is ready for sleep training include: sleeping for five to six hours or longer on occasion, waking more frequently at night after a period of stable sleep and reaching 4 to 6 months of age.

What is the 40 day rule baby? ›

Although the length of the postpartum period varies cross-culturally, the notion of a 40-day postpartum is common in many non-Western cultures. In almost all non-Western societies, 40 days after birth is seen as necessary for recuperation.

What is the 10 10 10 rule for babies? ›

Often, just 10 minutes of talking with someone who listens well can ease the stress and protect the baby. The 10-foot rule: Place the baby in a safe spot and stay 10 feet away until you feel calm. The 10-minute break: Focus on something else for 10 minutes after leaving the baby safely in an empty crib.

What is the hardest day of sleep training? ›

Again, every baby is different, but from my own experience and the experiences of my friends, the 2nd or 3 rd night of sleep training are often the most challenging– meaning that babies cried more on those nights than any other night.

When to let baby cry it out? ›

Experts share that while various methods state you can start CIO as early as 3 to 4 months old (sometimes younger), it may be more developmentally appropriate to wait until your baby is over 4 months old. Some CIO methods go by a child's weight as a recommendation on when to start. Others go purely by age.

What is the sweet spot for sleep training? ›

Experts recommend beginning sleep training when babies are 4 to 6 months old. This age range is the sweet spot, since babies are old enough to physically make it for six to eight hours overnight without needing to eat but aren't quite at the point where the comforting you provide has become a sleep association.

What is the 15 minute rule for sleep training babies? ›

Sleep Training Must: 15-Minute Rule

It's based on the idea that even the healthiest of babies will predictably cry, whimper, or whine during the 5-20 minutes while they're transitioning between sleep cycles. If you rush in, you don't allow your baby the opportunity to fall back to sleep on his own.

Is the Ferber method safe? ›

Is the Ferber Method Harmful? Children's health and development experts agree that when infants receive love and attention during their waking hours, using the Ferber method isn't harmful. It doesn't damage babies or disrupt the relationship between babies and their parents.

What is the Ferber sleep training method? ›

The Ferber Method offers guidelines for how often to check-in on crying children and how long to provide reassurance. Caregivers must monitor and progressively increase the time between each check-in, and on successive nights, they must lengthen the time between check-ins.

How early is too early for sleep training? ›

He recommends parents begin sleep training when their infant is no younger than 3 - 4 months of age. Practicing gentle methods like gradual withdrawal or pick-up-put-down for 3 month old bedtime may be a good way to slowly begin. The appropriate age to sleep train would be after 4 months old.

Will baby ever learn to sleep without training? ›

From around 4 months though, your baby can definitely start learning to cognitively put themselves to sleep - especially if they have hit the 4 month sleep regression. This regression signals that your baby's sleep cycles have matured, so they may start catnapping during the day or waking every 2 hours overnight.

Do babies get overtired during sleep training? ›

While some overtiredness is inevitable while sleep training, not giving your child enough opportunities to sleep, keeping them up much longer than their recommended awake times, or putting them to bed way too late, will be disastrous for sleep training.

What 3 things should baby avoid and why? ›

Foods to avoid giving babies and young children
  • Salt. Babies should not eat much salt, as it's not good for their kidneys. ...
  • Sugar. Your baby does not need sugar. ...
  • Saturated fat. ...
  • Honey. ...
  • Whole nuts and peanuts. ...
  • Some cheeses. ...
  • Raw and lightly cooked eggs. ...
  • Rice drinks.

What is the 333 rule baby? ›

Remembering a “3-3-3-3” rule can help you determine if you have a colicky baby on your hands. Colicky babies are less than three months old, cry at least three hours at a time, three days a week for three consecutive weeks. Lindgren says, “Generally, colic occurs at a predictable time of day.

What is the 10 second rule for babies? ›

The 10 second rule is where you ask a child a question and you count to 10 before asking another question or pushing for an answer if they don't respond. This allows the child time to be able to listen, process and understand what has been said or asked of them without adding additional pressure.

What is the 5 8 rule for baby sleep? ›

Kuroda reiterated that walking with an infant in your arms for five minutes continuously is crucial — then it can be followed by five to eight minutes of sitting with the child in your arms in order to "stabilize their sleep." "The first five to eight minutes of sleep is shallow sleep," she explained.

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