My DS has just moved into his cot in our room instead for his moses basket, he has been rolling over onto his tummy/side and sleeping during the night. We have been up to now moving him back onto his back for fear os suffocation. Within the last month he discovered how to roll onto his tummy but only within the last week or so has he discovered how to roll back onto his back, he can not do this all the time though. Are we ok to leave him on his tummy/side during the night, or should we roll him back over? He is not a good sleeper anyway but losing more sleep worrying he will suffocate in his sleep.