Hi there everyone!

I need some help with my pied ball python, Wraith. He's been having some weird feeding issues and I'm starting to get worried. He's a yearling and weighs 444 grams. He's very, very shy and I've only been able to feed him at night, when he comes out of his hide. So far he refuses to eat anything other than rat fuzzies. I feed f/t, and it seems to scare him when I make the rat do the zombie dance, so I just leave it in there with him and shut the door. I thought he should be taking bigger meals and tried feeding him pups, but he refused. Last week he shed so I didn't feed him, and when I went to feed him a fuzzy again last night he was out and showed some interest, but when I went to check on him later the fuzzy was still there. I'm baffled. I have three other ball pythons--one will only eat ASF's, one will eat anything you throw in there with her, and the third just broke a summer long hunger strike by going back to rats, so I'm familiar with BP feeding issues. But Wraith is the first really shy one I've seen--and the only one of my snakes who isn't an aggressive feeder, so I don't quite know what to do. I've only had him for two months now, so maybe he's taking longer to settle in? Or could it be the time of year for him? He's in half of a divided Animal Plastics T-8, and my lemon blast--the one who eats everything--is in the other half. Temps are good--80 ambient, with a hot side of 90. I'm getting worried about the little guy. Any ideas? Thanks in advance!