Yellow Watchman with a hole in it's side!

[Albertan22]

So I've got my goby eating again and he's actually looking a bit better. The general discoloration seems to be going away and I think the hole may be starting to close up a little bit. I'm reaching the end of the antibiotic treatment, but the directions say I can go up to three weeks "if necessary". How do I know whether to switch from the antibiotic to something like Melafix, or continue on with the antibiotic treatment?