New owner of a normal BP, adult male. He ate a f/t medium rat the first time we tried (3 wks ago), but has refused the last 2 weeks we tried to feed him. Otherwise, seems to be healthy and doesn't look stressed. We were planning on trying to feed him tomorrow, but when we took him out this evening, I noticed his belly is pink, which I've read is a sign of beginning to shed. Should we try to feed him, since it's been 3 weeks, or just wait until after he sheds? Last week when we tried to feed him, he struck the rat, but didn't coil or eat it. Yesterday when he was out he opened his jaw real wide a couple of times. Does that mean he's hungry?

Thanks for any advice!!