My russian tortoise of two weeks has not been eating well. The first week i took him to the vet and he was chubby and healthy. I have only seen him eat lettuce 3 times in the past two weeks. He seems to be keeping hydrated by baths and sips of water. I have tried feeding him many different lettuces, flowers, and wild foraged edibles. We have a vet appointment on friday. Does anyone have any advice?