Should I Sleep Train My Four-Month-Old?

If you're a parent of a 4-month-old, you may be wondering whether it's too early to start sleep training. While every baby is different, there are strong reasons why starting sleep training at this age can be beneficial for both your baby and your family.

1. Maximize Sleep Quality for You and Your Baby At 4 months, babies undergo significant changes in their sleep patterns, and it can be a great time to introduce sleep training techniques. If your baby is developmentally ready to self-soothe and fall asleep independently, starting at 4 months can help improve their sleep quality right away.|

Waiting until age 6 months could mean missing out on two months of better rest for both of you.

2. Overcome Sleep Disruptions and the 4-Month Sleep Regression Most 4-month-olds experience the notorious 4-month sleep regression, a developmental phase that can cause disruptions in their sleep patterns. During this time, many babies may have difficulty staying asleep, experience shorter naps, or wake up more frequently during the night.

Instead of tiredly waiting for the sleep regression to pass, why not embrace the exhaustion you are already experiencing and use it as an opportunity to start sleep training? Introducing sleep training techniques during this phase can help your baby adjust to new sleep routines and learn to self-soothe. Plus, it may make the regression pass more quickly.

3. Establish a Consistent Sleep Schedule for Better Sleep Even Without Sleep Training 

Even if your baby isn’t yet ready to self-soothe at 4 months, getting them on a consistent sleep schedule can work wonders for their overall sleep quality.

Having a structured bedtime routine and predictable wake windows helps regulate your baby’s circadian rhythm, making it easier for them to sleep for longer stretches.

By starting a sleep training routine at this age, you’re introducing structure that can ease the transition as your baby matures. Consistency in sleep routines, even before self-soothing begins, is a key part of helping your baby get the sleep they need.

4. Set Healthy Sleep Habits for Long-Term Success Introducing sleep training at 4 months can lay a strong foundation for your baby’s sleep habits as they grow. Early sleep training can teach your baby to self-soothe, fall asleep independently, and sleep for longer stretches—skills that will benefit them well beyond the 4-month mark.

By starting sleep training at this stage, you're not only helping your baby sleep better now, but you're also setting them up for success in the months and years ahead. Research shows that sleep habits established early can result in better sleep through the toddler and preschool years, leading to improved emotional regulation, cognitive development, and overall well-being.

5. Prevent chronic sleep deprivation. Did you know that studies have found that babies who cosleep at 4 months are still sleeping less than other children their age at two years old, even if they no longer cosleeping? 

Sleep training doesn’t have to be all-or-nothing, and it doesn't have to wait until your baby is 6 months old. Whether your 4-month-old is ready for full sleep training or just needs help establishing a consistent sleep schedule, starting early can benefit both your baby and your entire family. Why wait for sleep struggles to get worse when you can address them proactively and make the most of this challenging phase?
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By starting sleep training now, you can ensure that you and your baby enjoy better sleep—sooner rather than later. Consistent routines, better sleep quality, and long-term success are all within reach.

Curious to learn more? Schedule a free consult to get more information about whether sleep training might be a good fit for your family.