Coils but doesn't eat?

[towelie4365]

So I've never had problems with my male before, but suddenly he is having problems with actually eating his meal. Last week, he took his food right away like usually, but then I found the rat still in the cage in the morning. I took a closer look at him, and could see he wasn't as vibrant and his eyes were a bit cloudy (he is albino), so I figured he was shedding. Yesterday, I found the shed in his cage, so I fed him again. He took the meal right away again, then I came back an hour later and it was still there, so I did a quick heat up with a blow drier, and he took it again and coiled it, came back 15 minutes later he still didn't eat it, so I shook it and he coiled around it again... then I tried once more last night and he took it again, and I left it overnight only to find the rat still in there. He appears to be very hungry as usual, strikes and coils right away, so I don't know what the problem is. Any suggestions? I was going to try a smaller meal next time, even though they are a bit small for him already. I figure he just can't seem to find how to actually eat it for some reason...

Edit: he is about 400g, give or take a bit, and the hot side is 94-ish, cold side is 77 or so, humidity is in 60s, low 70s