KSB feeding and shedding questions

[Mimstrel]

So I've had my male KSB for several months now (my orIginla female unfortunately escaped on day 1 and was sadly eventually found dead in the basement. I recently purchased a new female who is doing well but has only been here a few days.)

My question with him is this. He seems to only be interested in food every 3-4 weeks, and seels to be in shed a lot. He is active and doesn't seem to be losing weight, but none of the things I have tried (braining the fuzzies, feeding in his cage, feeding in a container, feeding earlier or later, thawing the mouse in his enclosure to "scent seed", putting the mouse in the warmer area or the cooler area) seems to make any significant difference. He does eat f/t and on the days when he does decide to eat he doesn't seem hesitant to accept them. He was eating f/t fuzzies before I got him.

I'm not sure if I should be concerned or not. He does seem to be growing, albeit slowly, but I was really under the impression that I should expect him to eat once a week or so, not once a month. Advice?

I do have a thermostat to regulate his hot spot and a temp gun to check it as well. The hot spot got a little too hot (like 10-15 degrees) over the summer at one point but now it's pretty consistent in the mid-90s.