I've never had a dwarf hamster, only Syrian hamsters. It is hard to let go of something you've taken care of for a long time, but try to take it to the vet and see what they say. If they have no other alternative than to put him down, then you need to respect the vet's decision.
It was a tough time for me when my hamster last year got wet tail and had to be put down.
It was a tough time for me when my hamster last year got wet tail and had to be put down.