I'll take my own tummy time, thank you

Andrew made it through the second night in a row without a peep, over 11 hours straight. I get suspicious about what he's up to in there, being quiet all night, so I woke up several times anyway to check on him. Half-way through the night he had rotated around 180 degrees. By morning, he had rotated all the way back to his initial position, except that he had also flipped onto his tummy! It seems that he has given up on us putting him on his tummy (lest he get fussy after a few minutes), and has decided to do it himself. This from the child who seems to have forgotten how to roll onto his back.