I have a sick 12 day old australorp chick and need to mix just a little terramycin in H20 for one chick only. Only instructions on the package are for huge amounts and also talks about a proportioner being set to meter? I have never even heard of that? Any ideas? This chick is still eating and drinking a little but stands by herself, never lays down to sleep, seems to be uncomfortable and have a larger abdomen than the others? Any advice would be helpful.