New mattress?

Basically it needs to be firm so if it's still really firm keep it but if it's got soft, replace

Replaced all of them when second baby arrived

I didn’t replace mine, but we moved my daughter into her own room before 6 months and given I knew the history of it because we got it brand new I felt fine reusing it

All except the travel cot one as 2nd baby hasn’t used it much

I didn't replace mine my first baby was a teensy guy my next baby could roll over and push up in a week and was ginormous I figured he'd be fine and he was the mattress was barely used by my first son I spent so much time holding him because he wasn't full term and his poor tummy hurt and it was freezing his life started during a blizzard I just held him close to me and got no sleep for months until I could see he was stronger

Thanks all, will have to get side sleeper out and check the mattress 😊

I replaced the Moses basket mattress because it had been stored in the loft and I wasn’t 100% sure it hadn’t got damp. But I didn’t replace the cotbed one because that just got moved from one room to another!

i did. waste of money considering she's refused to sleep on it😅