I think my foxface has ick as well I haven't started treatment yet.
I spent like 2 hours studying it yesterday. It's insane how many different opinions there are. So you kind of have to form your own or decide who's idea is the best.
The one I decided on and seems to be the idea of the more experienced hobbists is to remove the fish and quarantine or tank transfer. Then once again you have a million opinions on which method to use, and when to add the fish back into the tank. The safe bet sounds like 10-12 weeks but you see people adding fish back in a month and not having issues. Depends on if you want 100% no ich or want to gamble.