I would do just as you are. Leave him be to sleep, he knows what he wants (it's us that's going crazy ) and giving him a bath may make him mad at you but you've got to make sure he doesn't become dehydrated. When mine brumate (which they are) I wake them weekly for baths but they are older then yours.
Hopefully your baby won't sleep for long....it get's lonely without them! I have 3 lizards and 2 of those don't want anything to do with me hehe!
I bathed him yesterday, then offered him some super worm but he wasnt interested. I out him next to his towel and he went under it again. I lift the towel up every day to check if he is still breathing. And he is doing fine. Considering he hasnt eaten for 3 weeks he isnt really losing weight which is a good thing.