Maybe pedialyte would be good? I've heard of that for chickens, might help if the antibiotics has crushed the chicks ability to digest the carbs in crumble. It's more accessible basic calories and electrolytes.We've been syringing watery crumble in a similar amount to the medicine. The vet said to keep offering her food and water, but we want her to at least have something. Her walking is a little better, but she needs to get eating.