When we got to Indiana, Colin starting doing more and more tummy time because there were big windows he loved to look out. One day, I looked away for a second and looked back and he was off his tummy and on his back. We blew it off as a fluke and went on with our day. The next day we put him on his tummy again and he did it again. By the time we left Indiana, he was rolling over from his tummy to back multiple times in a row, multiple times a day. I was shocked. He was approximately 6 weeks old and was rolling! There is a video below just so you know I'm not making this up!