3 and a half month old sleeping on his side

[iloveny001]

DS slept through the night last night-hurrah! However, when I checked on him (woke up as he hadn't!) he was sleeping on his side. I put him back onto his back, but when I checked on him an hour later, he was again on his side.
I know they are supposed to sleep on their backs, but what do I do if they move in their sleep? If I'm asleep at the same time, I'm not going to know. I would imagine at some point, he will end up on his front!
Can I just leave him, or is there anything I should be doing?

The advice is put them to sleep on their backs, move them into their back if you find they have moved, but don't stay up watching them in case they move.

Congrats on all the sleep, hope it happens again for you.

Thanks maternity! You just know tonight he will be up every hour!

Did a quick nc BTW!

My 5 month old has been sleeping on her side since I discovered she preferred that position when she was about 4 weeks.

I guess I'm a bit concerned in case he rolls onto his front, and then can't turn back over again

My DD would never lie on her back even in the hospital, and she still now at 9months turns onto her side, I guess that's where she's comfortable. I was concerned too at the beginning but my HV told me that as long as the arm on the side they are lying is out away from the body and in front of them (not tucked underneath them) then they can't roll onto their fronts. Once they reach an age were they are rolling over anyway there's nothing you can do to stop them moving about in their sleep. But if they are strong enough to roll over then their head control will be good enough to safely sleep on their tummy if they end up in that position. I think the problem with tummy sleeping in the early weeks is the lack of head control. So I wouldn't worry about side sleeping if you find your DS on his side just check the arm he's lying on is out Hope that made sense.