Five months is a solid age to start sleep training. By now, your baby’s internal clock has matured enough to distinguish day from night, and most 5-month-olds can learn to fall asleep independently within one to four weeks, depending on the method you choose. The key ingredients are a consistent bedtime routine, the right sleep environment, and a method you can stick with night after night.
Why 5 Months Is a Good Starting Point
Babies don’t develop regular sleep cycles until around 4 months of age. Before that point, their brains simply aren’t wired for the kind of consolidated nighttime sleep that training aims to build. By 5 months, that wiring is in place. Your baby’s circadian rhythm is functioning, and most babies this age are physically capable of going five or more hours between feedings at night.
You’ll also notice early self-soothing behaviors around this age: sucking on fingers, turning their head to a comfortable position, or rubbing their face against the mattress. These are signs your baby is developmentally ready to practice falling asleep without being rocked, nursed, or held.
Set Up the Sleep Environment First
Before you pick a method, make sure your baby’s sleep space is safe and consistent. Place your baby on their back in a crib, bassinet, or portable play yard with a firm, flat mattress and a fitted sheet. Keep the space clear of loose blankets, pillows, stuffed animals, and bumpers. No exceptions, even if the crib looks bare.
Beyond safety, think about what signals “sleep” to your baby’s brain. Dim the lights in the room about 30 minutes before bed. White noise at a steady, low volume can help block household sounds and cue your baby that it’s time to wind down. Keep the room comfortably cool.
Build a Short, Predictable Bedtime Routine
A bedtime routine is arguably more important than the training method itself. It creates a chain of cues your baby learns to associate with sleep, so by the time you lay them down, their body is already shifting toward drowsiness. The routine should be short, calming, and the same every night.
A typical routine at 5 months might look like this: a warm bath, a fresh diaper and pajamas, a feeding in a dimly lit room, a lullaby or short book, then into the crib drowsy but still awake. The whole sequence can take 20 to 30 minutes. That last part, putting your baby down while they’re sleepy but not fully asleep, is the single most important habit to establish. It’s how they learn that the crib is where sleep starts, not your arms.
Use an abbreviated version of this routine before daytime naps, too. Even just dimming the lights, singing one short song, and laying your baby down reinforces the same sleep cues throughout the day.
Get the Daytime Schedule Right
Sleep training works best when your baby isn’t overtired or undertired at bedtime. At 5 months, most babies do well with wake windows of 2 to 3 hours between sleep periods. That typically means 2 to 3 naps during the day, totaling roughly 3 to 4 hours of daytime sleep.
Watch for tiredness cues: rubbing eyes, yawning, fussiness, staring off into space. If you wait until your baby is crying and clearly exhausted, you’ve likely pushed past the ideal window, and an overtired baby has a harder time settling independently. Aim to start the nap or bedtime routine at the first signs of drowsiness, not after a meltdown.
Choose a Method You Can Follow Through On
There’s no single “best” method. What matters most is consistency. Switching approaches mid-week sends mixed signals and generally draws out the process. Here are the three most commonly used approaches, along with realistic timelines.
Full Extinction (Cry It Out)
After your bedtime routine, you place your baby in the crib awake, say goodnight, and leave the room. You don’t return until morning or until a scheduled night feeding. This is the most direct approach, and it tends to produce results in about three to four days. The first night or two involve the most crying, often 30 to 60 minutes. By night three or four, most babies settle within minutes.
This method is emotionally difficult for parents but has the fastest results. It works well for babies who get more agitated when a parent keeps entering and leaving the room.
Graduated Extinction (Ferber Method)
This approach adds timed check-ins. You put your baby down awake, leave the room, then return at increasing intervals to briefly reassure them (a pat, a quiet “shh,” a few calm words) without picking them up. On night one, you might check in after 3 minutes, then 5, then 10. On night two, you start at 5 minutes and stretch longer from there.
The Ferber method typically takes seven to ten days to see consistent results. It gives parents a way to stay involved without fully removing the opportunity for the baby to practice self-settling.
The Chair Method
You place your baby in the crib awake and sit in a chair next to the crib until they fall asleep. Every few nights, you move the chair farther from the crib and closer to the door, until eventually you’re outside the room entirely. This is the gentlest of the three, but it requires significant patience. More gradual approaches like this one can take up to four weeks.
The chair method suits parents who aren’t comfortable with extended crying, but it can be tricky: some babies get frustrated seeing you right there without being picked up. If your baby seems more upset with you in the room than out of it, a different method may be a better fit.
Handling Night Feedings
Sleep training and night weaning are two separate things, and you don’t have to do both at once. At 5 months, many babies can go five or more hours between feedings overnight, but some still genuinely need one or two feeds, especially breastfed babies. If your baby is waking to feed more than twice a night at this age, those extra wakes are more likely habit than hunger.
A practical approach: keep one or two planned night feeds for now, and sleep train around them. When your baby wakes at a scheduled feed time, go in, feed them in dim light with minimal interaction, and put them back in the crib awake. For all other wakes, apply your chosen sleep training method. You can gradually drop night feeds later, once independent sleep is established, or your pediatrician confirms your baby’s daytime intake is sufficient.
One common myth worth addressing: adding cereal to a bottle will not help your baby sleep through the night. Babies don’t need solid foods until around 6 months, and there’s no evidence that extra calories at bedtime reduce night waking.
What to Expect the First Week
Night one is almost always the hardest. Your baby doesn’t yet understand the new expectations, and crying is their way of communicating confusion, not distress in a harmful sense. Expect anywhere from 20 minutes to over an hour of protest on the first night, regardless of method.
Night two is often slightly worse (sometimes called an “extinction burst”), where your baby cries a bit longer or louder, essentially testing whether the old routine will return. By night three, most families using extinction-based methods see a noticeable drop in crying. By night four or five, many babies settle within 10 minutes.
With gradual methods, improvement is slower and less linear. You might see good nights followed by rough ones. That’s normal. The overall trend matters more than any single night.
When Sleep Falls Apart Again
Even after successful training, expect occasional setbacks. Teething, illness, travel, learning new physical skills like rolling over, and developmental leaps can all temporarily disrupt sleep. These regressions are normal and don’t mean the training failed.
The fix is usually straightforward: maintain your bedtime routine, keep the sleep environment consistent, and give your baby a chance to resettle on their own before intervening. Most regressions resolve within a week or two if you stay consistent. If you revert to old habits (rocking to sleep, bringing your baby into your bed) during a regression, you may need to retrain, so try to ride it out with minimal changes to the routine you’ve established.
Picking the Right Method for Your Family
Your baby’s temperament matters. Babies who escalate quickly when they see a parent and then lose that parent again often do better with full extinction than with check-ins that repeatedly reset the cycle. Calmer babies who are reassured by a parent’s voice may respond well to the Ferber method or the chair method.
Your own tolerance matters just as much. If you know you’ll break down and pick your baby up after 10 minutes of crying, a gradual method with built-in check-ins gives you a role to play. If you’d rather get through the hardest part quickly, extinction is typically the fastest path. The “wrong” method is whichever one you can’t follow through on, because inconsistency is what actually prolongs crying and delays results.