Anyone else have this problem?

mags1984

So my DS was STTN and now he will roll over onto his tummy and the fuss and sit up and fuss, but all i have to do is go in and lay him back down and cover him up and he goes right back to sleep, he does this 3-5 times a night now. It seems to me like he is just not sure how to lay himself back down once he sits up. Anyone know how to fix this?