Tummy Time: First Years

5 1/2 Month Old Turning onto Tummy, Not Able to Fall Back Asleep in Crib

Hi, My 5 1/2 month baby boy was doing pretty well at sleeping through the night or would be able to cry/self-soothe himself back to sleep after waking up. This past week, he started rolling from his back onto his tummy in his crib. When he wakes up and does this, he can't fall back asleep and will scream until one of us comes into his room to help him turn back over. Then we will have to rock or nurse him to sleep. Sometimes he will wake up two or three times during the night now. Anyone else go through a similar situation or have...