The Ferber method teaches your baby to fall asleep independently by putting them down awake and checking on them at timed intervals that gradually increase over the course of a week. Most families see significant improvement within three to seven nights. Here’s exactly how to do it, night by night.
How the Ferber Method Works
Babies who are used to being rocked, nursed, or held to sleep develop a strong association between your presence and falling asleep. When they wake naturally between sleep cycles (which all humans do, multiple times a night), they can’t get back to sleep without you recreating those same conditions. The Ferber method, also called graduated extinction, breaks that association by giving your baby the opportunity to develop self-soothing skills while still offering brief reassurance at scheduled intervals.
The key distinction from “cry it out” is that you don’t just leave the room and not return. You check in on a structured schedule, but you keep each visit short and avoid picking your baby up. Over several nights, you space out those check-ins further and further apart, giving your baby progressively more time to settle on their own.
Before You Start
Your baby should be at least 4 months old and weigh at least 14 pounds. Before that age, most babies genuinely need nighttime feeds and haven’t developed the neurological capacity to self-soothe. It’s also worth confirming with your pediatrician that your baby is healthy, growing well, and doesn’t still need overnight calories. If your baby is sick, teething badly, or going through a major transition like starting daycare, wait until things stabilize.
Establish a consistent bedtime routine that you’ll use every single night. This might be a bath, a feeding, a book, and a song, in the same order, lasting about 20 to 30 minutes. The routine signals to your baby that sleep is coming. The final step is always the same: place your baby in the crib drowsy but awake, say goodnight, and leave the room.
The Night-by-Night Schedule
The Ferber method runs on a specific interval chart. Each day, the wait times before check-ins increase. Here’s the full schedule:
- Day 1: Wait 3 minutes before the first check-in, 5 minutes before the second, then 10 minutes for the third and all subsequent check-ins.
- Day 2: 5 minutes, then 10, then 12 for all remaining.
- Day 3: 10 minutes, then 12, then 15 for all remaining.
- Day 4: 12 minutes, then 15, then 17 for all remaining.
- Day 5: 15 minutes, then 17, then 20 for all remaining.
- Day 6: 17 minutes, then 20, then 25 for all remaining.
- Day 7: 20 minutes, then 25, then 30 for all remaining.
These intervals come from Dr. Richard Ferber’s book, and he notes they can be slightly adjusted to fit your comfort level. If 3 minutes on the first night feels impossible, you could start at 2. What matters is that the intervals increase progressively and that you stick to whatever schedule you choose.
What to Do During a Check-In
A check-in is not a rescue. You go into the room, speak to your baby in a calm, reassuring voice for one to two minutes, and then leave. You can pat their belly or stroke their head briefly, but don’t pick them up, don’t feed them, and don’t stay until they stop crying. The purpose is to let your baby know you’re still there, not to soothe them all the way back to calm.
This is the hardest part for most parents. Your baby will likely cry harder when you leave again. That’s normal and expected. The check-in isn’t really designed to stop the crying in the moment. It’s there to maintain the bond and give you reassurance that your baby is safe, while still allowing them the space to learn a new skill.
After the third check-in on any given night, you continue waiting at the longest interval for that day. On night one, that means returning every 10 minutes if your baby is still crying. You keep this up until your baby falls asleep during one of the waiting periods. Once they’re asleep, you don’t wake them for a check-in.
Handling Middle-of-the-Night Wakings
The interval schedule applies to every waking, not just bedtime. If your baby wakes at 2 a.m. on night three, you start the night-three intervals from the beginning: wait 10 minutes, then 12, then 15 for all subsequent check-ins. This consistency is what makes the method work. If you respond differently at 2 a.m. than you did at 7 p.m., your baby gets mixed signals about what’s expected.
This is where many families struggle. It’s one thing to commit to the plan at bedtime when your resolve is fresh. It’s much harder at 3 a.m. when you’re exhausted. Having a partner take turns monitoring the clock can help, as can reminding yourself that inconsistency tends to prolong the process and lead to more total crying, not less.
Managing Night Feeds During Sleep Training
If your baby still needs a nighttime feed, you don’t have to eliminate it all at once. You can run the Ferber method alongside a gradual weaning approach.
For breastfed babies, reduce the length of each feeding by 2 to 5 minutes every other night. If your baby typically nurses for 10 minutes, drop to 8 minutes for two nights, then 6 minutes for the next two, and so on. Once the feed is under 5 minutes, you can drop it entirely and use the Ferber check-in intervals to resettle instead.
For formula-fed babies, reduce the volume by 20 to 30 ml every other night. A baby drinking 180 ml would get 150 ml for two nights, then 120 ml, and so on. Once you’re down to 60 ml or less, stop the feed and resettle using the intervals. The goal is to separate the feeding from the falling-asleep process so your baby doesn’t rely on the bottle to drift off.
What to Expect Each Night
Night one is typically the hardest. Some babies cry for 45 minutes to over an hour before falling asleep. This is normal. Night two is often slightly better, though some babies have a worse second night (sometimes called an “extinction burst”) where they test the new boundaries harder before accepting them.
By nights three and four, most babies show a noticeable drop in crying time. Many are falling asleep within 10 to 15 minutes with minimal fussing. By the end of the week, the majority of babies go down with little to no protest and sleep through most or all of the night. The full process typically takes three to seven nights, though some babies take up to two weeks.
If you’re not seeing any improvement after a full week of consistent effort, something else may be going on. The most common culprits are an inappropriate bedtime (too early or too late), an overtired baby who missed nap windows during the day, or inconsistency in how different caregivers respond.
Why Consistency Is Everything
The single most important factor in whether the Ferber method works is whether you follow through every time. If you do the intervals for 40 minutes and then give in and rock your baby to sleep, you’ve just taught them that extended crying eventually gets the result they want. This makes the next attempt harder, not easier, because your baby has learned that persistence pays off.
Both parents (and any other caregivers who handle bedtime) need to agree on the plan before you start. Pick a week when nothing major is happening: no travel, no visitors sleeping over, no illness. Once you begin, commit to at least five full nights before evaluating whether it’s working. Starting and stopping repeatedly is harder on everyone, including your baby, than seeing it through.
Is It Safe?
Graduated extinction is one of the most studied approaches to infant sleep, and behavioral research consistently shows it helps babies develop the ability to fall asleep independently without negative effects on the parent-child bond. Studies measuring stress hormones and long-term attachment outcomes have not found harm from structured sleep training methods when used at an appropriate age. The temporary distress of crying during the learning period is not the same as chronic, unattended distress. You are not ignoring your baby. You are teaching them a skill with a structured safety net of regular check-ins.