Tummy time?

For the first 4 1/2 months of his life, Sam really hasn't liked being on his stomach. We encouraged it for good development but all in all, those tummy moments didn't last very long. That is until this week. All of a sudden Sam has decided that not only is he okay with tummy time, he is flipping over in his crib and sleeping on his stomach. This is how we found him after a nap a couple of days ago. Silly Sam. He really does get cuter and cuter every day.