For the last week he has been rolling over completely onto his belly and up onto his elbows. He is only 12wks but is confident at it and seems to have mastered it. We are worried about him doing it at night and getting into trouble. He sleeps in his own room in a cot bed and so far has not rolled over onto his belly but only on his side. It might only be a matter of time though. If he was a bit older we prob wouldn't worry so much... please help!