Won’t pick head up

Amelia

My 15 week old absolutely hates tummy time. Whenever I put him down to do it he just turns his head to the side, lays there and chews on his hand. Once in a while he will pick his head up a couple times but no more than that. He definitely can support his own head though while I have him on my lap or walking with him. Any tips? Any other mommas going through something similar?