I hope it is just the seasonal hunger strike!
When I got him the owners gave me a list of his feedings, size of meal, if it was taken and such. He was eating perfectly before coming to mine. My husbandry seems to be okay, perfect temps and gradient, 2 hides, water bowl and such.
I always leave the f/t rat in the enclosure if he doesn't go for it. I have tried to cover the front of the glass panels with towels so it is dark in there and he isn't nervous of people being around or what not.
Cheers for the help.