Hi,
So you have tried to wait until he has completely finished the first one before offering the second? I took your first post to mean you were offering the multiples at the same time rather than one after the other.
If he won't eat more than one mouse at a sitting then I would say you really shouldn't feed any more than once in a 3 day period - preferably 5.
If that means throwing out the mice then I would probably just do so.
dr del