Should a 5 month old baby be sleeping on his tummy? My child sleeps properly when on the lap but the moment we put him to bed/ cradle, he rolls over and starts sleeping on his tummy. Sometimes even for 1-2 hrs when he is in deep sleep. Wakes up crying, only to feed. He doesn't want to sleep on his back at all when he is on bed. The internet has all kinds of things to say. Is it something to worry about? What are possible ways to deal with it?