I have a 6 week old fawn I have been bottle feeding since day 1. He has been doing great. Last night he did not act hungry and would not take a full bottle. This morning I got him to take a half bottle, but he seemed fine though. This evening I went to feed him and he is panting and can't hardly walk. Seems very stiff legged. Not sure he is going to make long. Any thoughts or advice please? Thanks so much!