The best drug for gut issues is Baytril 100 1/2cc per day for four days should do the trick. That would take care of gut bacteria. I would also put something in his milk for coccidia like a sulfa drug like sulfa quinnoxlin. If he stops eating you will have to tube it to keep him alive. Spelling on Quinnoxlin is wrong but I'm making milk right now so don't have time to look it up. Good luck
Jack couldn't they give yogurt for the gut problem if in a pinch. I know I used that when I almost killed all my fawns by giving them some corn for treats one night. I lost 4 bucks and saved the 5th after feeding it yogurt. I would put it in a syringe and make them eat it.
1/2cc tylan 200(you can buy at tsc), 1/2cc iodine,1tsp pumpkin, 1 tsp dannon whole milk yogurt, or I sometimes use the refrigerated active probiotic you buy at a pharmacy.