I found a baby squirrel, looks about 4 weeks. I made a formula from Henry’s pets recipe and am trying to feed him but doesn’t seem to be consuming food. He doesn’t seem to be dehydrated. He’s gasping/clicking some. I’m afraid he has aspiration pneumonia. My vet doesn’t treat squirrels. There’s no wildlife rescue near me. How do I get an antibiotic for him? I’m keeping him warm. I don’t want him to die!