ds2 is nearly 19 weeks old and if any of you have read my other thread (help he won't stop crying) i have been having a lot of trouble with him sleeping (or not as the case may be!!) He has been awake since 1am today. He has started to roll over onto his tummy but can't roll back yet. I have just gone into the bedroom to find he has finally settled....but laying on his tummy. Should I turn him back over or leave him?? I keep going in to check on him as I am scared he will do himself some damage. My other two didnt sleep on tummy til they could roll back so it didnt matter by then.