There is exactly one rule I'd tattoo on every new parent
ABC. Alone, on her Back, in a Crib. That is the entire American Academy of Pediatrics safe-sleep framework, and it is the single most effective thing we know how to do to lower the risk of SIDS and sleep-related infant deaths. Everything else is noise.
A is for Alone
No blankets. No pillows. No stuffed animals. No bumpers (even the 'breathable' ones — the AAP came out against all of them). No co-sleeping in your bed. No couch naps with baby on your chest while you doze off. The sleep space is for the baby and nothing else.
B is for Back
Every nap. Every night. Every single time, until she can roll both ways on her own. The 'side sleeping' thing your mother-in-law swears by is not in the guidelines, and there is decades of research backing the back-sleeping recommendation. This one is non-negotiable for me.
C is for Crib (or bassinet, or play yard)
Firm. Flat. Free of inclined surfaces. Tight-fitting fitted sheet and that's it. No swings, no car seats, no DockATots, no Boppys, no Snoos with an unsafe attachment. A flat firm surface is the standard, and it has not changed because the science has not changed.
The 'room-share, don't bed-share' rule
The AAP recommends keeping baby in your room (in her own bassinet or crib) for at least the first 6 months. Same room, separate surface. That single move is associated with up to a 50 percent reduction in SIDS risk.
What I personally used
A bassinet next to my bed for the first couple of months. A swaddle instead of a blanket (this is the entire reason we make the Snugababe and the One & Done). Nothing else in the bassinet. A room thermostat set between 68 and 72. That's it. Boring, repeatable, and aligned with every major pediatric guideline.
Why I keep coming back to this
We don't post safe-sleep content because it goes viral, it doesn't. We post it because it can prevent sleep-related deaths. Almost every single case involved a deviation from the ABCs. The rule is simple. The stakes are not. We can do this.