Does that vet know about rabbits? Is it a regular vet or an exotics vet? Feeding just apple sauce seems like a bad idea, it's so much sugar it will alter Busters gut flora. No pooping is an EMERGENCY!!! I'd take Buster to an exotics vet, they know more about rabbits. If you are going to force feed anything, it should be Critical Care, which has lots of fiber to get Busters gut moving again. I made mine watery, like a ketchup consistency, to get more water into Harvey when we had our stasis scare. But hurry!!!