tummy time...

💜𝑺𝒉𝒆𝒍𝒍𝒚💜 • 💙 Boy mama 💙

I have been doing tummy time with my 2 month old, however yesterday he rolled over onto his back and now everytime I try to do tummy time he rolls over. I flip him back over but he just rolls again. Isn't it too early for him to know how to roll over!? How can I get tummy time in?