I feed mine in a seperate container. I just feed him in a 5 gallon bucket. I make sure the floor of it is warm. Drop the mouse in.
Then make sure my little guy knows I'm reaching in there for him. Move him into the bucket. He eats. I wait 10 or 15 minutes or so. And the gently put him back in his little home. Works great for me.
I feed him in a seperate container so he doesn't associate me reaching into his area with feeding. Not lookin to get bit anytime soon.
This is what I do right now. Once he gets bigger and he eats something bigger than fuzzies. Ill figure something else out. But this is what works for me right now. Just my 2 pennies.
Sorry for the long reply.