I'm sorry, I don't know about sourcing Baytril where you are. Maybe a vet would prescribe a small amount without seeing the peachick if you make an appointment to bring it in later in the week? Or maybe you can source a different antibiotic until the vet is able to see you? I don't know of anything as reliable as Baytril but maybe there's something that will buy you a couple of extra days until a vet visit is possible.After doing more searching, I dont think there's going to be a way to get any Baytril, or the generic, without it being shipped or prescribed.
I appreciate all of the advice, but it appears my only option is to just try to feed the chick with the baby bird food, and prepare for the worst.