Let me start off with I know what I did to damage it, and looking to find out if I can undo it.
Long story short, I was an idiot and left my very happy Fukien Tea in the rain. I came back to everything soaked, brown, and falling off. It's got like seven leaves left of its former glory and while they're fully green now, I worry about their future. Is there any way to reverse this or am I going to have to start over? (This is tree before for reference)