Every sleep: on the back, alone in their own space, on a firm flat surface with nothing else in it, in your room for at least the first 6 months. Offer a pacifier at naps and bedtime. No smoking. Stop swaddling when your baby looks like they are trying to roll — usually 3 to 4 months.
This post is not about opinions. These are the American Academy of Pediatrics recommendations for reducing the risk of SIDS and sleep-related infant death, with the numbers attached. Each one is small on its own. Together they are the most effective thing you can do for your baby overnight.
What is the safest way to put my baby down to sleep?
On their back. Every sleep, every nap, every time, until they can roll both directions on their own. Once your baby rolls onto their stomach independently, you do not need to turn them back — keep placing them on their back to start.
Alone in their own sleep space. Nothing in the crib but your baby and a fitted sheet. No blankets, no pillows, no bumpers, no stuffed animals, no positioners, no loungers or docks. Product marketing is not a safety standard.
On a firm, flat surface that meets current safety standards — a crib, bassinet or play yard. Here is the number most parents have never seen: the AAP says any surface that inclines more than 10 degrees is not safe for your baby to sleep on. That rules out most loungers, wedges and "reflux" positioners.
Not in a sitting device. The AAP says car seats, strollers, swings, infant carriers and slings are not recommended for routine sleep, particularly for infants younger than 4 months. If your baby falls asleep in the car seat, move them to a flat surface when you arrive.
Should my baby sleep in my room?
Yes. The AAP recommends keeping your baby's sleep area in the same room where you sleep — but not in the same bed — for at least the first 6 months. Room sharing lowers the risk, and it makes night feeds considerably easier.
What does the AAP say about bed sharing?
The AAP's wording is unambiguous: "the AAP doesn't recommend bed sharing with your baby under any circumstances."
The risk is not evenly distributed, and the numbers explain why the position is so firm. Compared with a baby in their own safe sleep space, risk is up to 67 times higher on a couch, sofa or soft armchair; about 10 times higher if the adult is impaired by alcohol, medication or drugs; and roughly 5 to 10 times higher for babies under 4 months old.
And here is the part that matters as much as the rule. Many parents end up sharing a bed at some point — planned or at 4am when nothing else has worked. If that is your reality, you are not a bad parent, and you should still have the safest version of the information:
- Never on a couch, sofa or armchair. This is the single highest-risk surface, by a wide margin.
- Never if any adult in the bed has been drinking, is taking sedating medication, using drugs, or is extremely sleep-deprived.
- Keep the surface firm and flat. Move pillows, duvets and heavy blankets away from your baby.
- No other children or pets in the bed.
- Your baby stays on their back, not swaddled or wrapped.
- Nobody who smokes should share a bed with a baby, even if they never smoke indoors.
- Make sure your baby cannot fall or become wedged between the mattress and a wall, headboard or frame.
If you want a middle path, a bedside bassinet gives you arm's-reach access with a separate surface. Talk to your pediatrician honestly about what your nights actually look like — they would far rather help you make it safer than never hear about it.
When do I stop swaddling?
When your baby looks like they are trying to roll over. The AAP notes that rolling over usually happens around 3 to 4 months, and can be earlier.
A swaddled baby who rolls onto their stomach cannot use their arms to lift or turn their head. This is why the swaddle deadline is a real deadline and not a preference. Watch for the attempts, not the calendar — if your 10-week-old is arching and pushing onto their side, that is your signal.
The transition is usually easier than parents expect: a sleep sack with the arms free, or one arm out for a few nights first.
What else reduces SIDS risk?
Five recommendations the AAP makes that almost never appear on a "safe sleep rules" list — and each one is genuinely protective.
1. Offer a pacifier at nap time and bedtime. The AAP is direct: this helps reduce the risk of SIDS. If you are breastfeeding, NICHD guidance is to wait until feeding is well established, per your pediatrician. If it falls out after your baby is asleep, you do not need to put it back.
2. Breast milk lowers the risk, for as long as it lasts. The AAP states that human milk reduces the risk of SIDS, and that the longer a baby receives it, the more protection it provides — with as little as 2 months of at least partial human milk feeding significantly lowering risk. If you are formula feeding or combination feeding, the rest of this list is entirely within your reach, and it is where your effort is best spent.
3. No smoking or nicotine — during pregnancy or after. The AAP calls smoking in pregnancy and smoke in a baby's environment after birth significant risk factors for SIDS. The 2022 guidance also names alcohol, marijuana, opioids and illicit drugs as exposures to avoid. Quitting is hard and this is one of the highest-yield changes available; your doctor can point you to support that works.
4. Daily supervised, awake tummy time. Start on the first day home. The AAP suggests 2 to 3 sessions a day of 3 to 5 minutes each, working up to 15 to 30 minutes a day by 7 weeks. Always awake, always watched. It builds the neck and shoulder strength your baby needs to lift and turn their head — which is exactly the skill that matters if they end up face-down.
5. Do not let your baby get too hot. Overheating raises risk. NICHD guidance: take your baby's hat off once you are home and indoors, and watch for sweating, flushed or hot skin, or a chest that feels hot to the touch. Dress for the room, not for the fear of a cold baby.
Do movement monitors like the Owlet prevent SIDS?
No, and the AAP's language here is stronger than most parents realize: "Don't use home cardiorespiratory monitors as a way to reduce the risk of SIDS."
These devices are not proven to prevent sleep-related death, and relying on one can quietly displace the practices that do work. Some parents find the data reassuring, others find that false alarms make the anxiety worse. Either way, treat a monitor as a gadget, not a safety measure. The sleep environment is what reduces risk. If a monitor is helping you sleep, keep it — and keep every rule above as well.
The bottom line
Safe sleep is not paranoia. It is a short list of specific, proven steps: back, alone, firm and flat, your room for 6 months, pacifier at sleep times, no smoke, no overheating, tummy time while awake, and the swaddle gone by the first rolling attempts around 3 to 4 months.
If you have been doing something on this list differently, you have not harmed your baby — you have found something to change tonight. Set the crib up before the next nap and you are done.
ParentingAI can help you set up a safe sleep environment for your baby's specific age. [Try it free.]
Sources
- AAP / HealthyChildren.org — How to Keep Your Sleeping Baby Safe: AAP Policy Explained
- AAP — Sleep-Related Infant Deaths: Updated 2022 Recommendations for Reducing Infant Deaths in the Sleep Environment, Pediatrics 2022;150(1):e2022057990
- AAP / HealthyChildren.org — Safe Sleep: Back is Best, Avoid Soft Bedding, Inclined Surfaces & Bed Sharing
- AAP / HealthyChildren.org — Back to Sleep, Tummy to Play
- NICHD Safe to Sleep — Ways to Reduce Baby's Risk
Last medically reviewed: August 2026 Last updated: August 2026
For informational purposes only — not medical advice. This article does not replace guidance from your pediatrician, who knows your baby. Always consult your healthcare provider for medical questions about your child.
In an emergency, call 911. If your baby is unresponsive or not breathing, call 911 immediately. For a suspected poisoning or a swallowed substance, call Poison Control at 1-800-222-1222 (free, 24/7).