"Tummy time" turns into "back time"

Gentry isn't loving tummy time....though he is already holding up his head very strongly & on his own....we only get a few minutes of tummy time and Gentry is done. But with that said, Gentry loves to lay on his back. He loves to look around and see what he can. He is starting to pull his legs up and towards his head. He is starting to notice his hands....I worry if he realizes that they belong to him?

Gentry's tummy time mat is pretty cool though....it's a surf board, as you can see in the picture. Hopefully he will learn to love tummy time. Robby & I are not giving up yet.