I am so sorry about the way the vet treated you!!!!
When I took Missy she just told me a bland diet and lots of water. I gave her boiled chicken, chicken broth, cottage cheese, etc...For a week. The vet was concerned about her dehydrating because she's so tiny. This might be the case with Chewy. I'm glad your furbaby is going to be ok!!! And again, sorry about the vet.
you did the best thing you could by taking them to the vet an the vet should have been WAY more helpful and understaning!!!