My son is almost 4 months old and still in the bassinet next to our bed. Everyone keeps telling me he should be in a crib by now, but I'm not sure if he's ready or if there's an actual age limit for using a bassinet. What's the timeline most people follow?
Most bassinets are designed for babies up to around 4-5 months old or until they start rolling over, whichever comes first. At 4 months your son is pretty much at that boundary, so it's not crazy that people are nudging you toward a crib. That said, every baby develops differently - some roll earlier, some later. The real safety issue is when they can flip themselves over consistently, because then they might end up face-down in the bassinet's soft mattress.
The transition doesn't have to happen overnight. If he's not rolling yet and you're comfortable with the bassinet setup, you've got a little wiggle room. But most families find it easier to move kids to a crib somewhere between 4-6 months just to avoid the rush if development happens faster than expected. A standard crib is safer long-term anyway since it's built for older babies and toddlers.
One thing to check - make sure your bassinet's weight and size limits haven't already been reached, and that the mattress is firm (not soft or cushy, which increases suffocation risk). If you're going to stay in the bassinet a bit longer, that matters more than the age number. When you do move him, just pick a time that feels right and give him a few nights to adjust. The crib will be fine whenever you make the switch.
The real question isn't age so much as size and movement - your son will let you know when he's outgrown it. That said, the window is genuinely narrow; by 5 or 6 months most babies are rolling or pushing themselves up, which makes a bassinet unsafe because the sides are too low. What I've seen work is just watching your kid rather than hitting a calendar date. At almost 4 months, if he's still sleeping well and hasn't started that typical rolling phase, you've got maybe another month or two of comfortable bassinet use - but some babies are ready to move earlier, some later. The pressure you're getting from everyone else probably says more about their own timeline than what's actually right for your family.
The weight limit on your bassinet's label is usually your clearest marker - most hit their max somewhere between 15 - 20 pounds, which for a lot of babies lands around that 4 - 5 month sweet spot. Since you're already there, check what yours says and also watch whether he's getting close to the sides when he rolls or stretches; if there's barely any breathing room left, it's time. One thing that really helped us was keeping the bassinet by the bed a bit longer even after transitioning to a crib in the room - we'd use the bassinet for the first sleep stretch of the night when we were still waking up constantly, then move him to the crib after. That way there's no hard cutoff and you're not forced into a rush if he's not quite ready, but you're also giving him the space to actually move around safely.
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