Yep been there got the t-shirt lol, all of mine used to tip the bowl up and go to the loo on the food, then the cheeky beggers start squeaking for more food, anyway I got round the problem by using hopper feeders that attach to the cage, they have a good go at getting them off but as yet none have succeeded, I shouldn't have said that should I? you can bet 1 of the little darling will get 1 off now lol ;D
A few of my lot do the same thing! Icey and Tiny just sit and sleep all the time, even stay still when I go and pick them up. The only time they run a little, is when they are let loose, but you need to budge them!