I have been treating my little guy for finrot for the past week or so. He seemed to be better so after using the fungus clear for the recommended length of time, I gave his tank a nice rinse and clean. I went away for the weekend and my mother fed him and everything. When I came home last night he looked worse then before i started treating him! His fins are torn now and they are curling and he just looks awful

I feel horrible for him and I
really need your guys' advice on how to medicate him. I tried bettafix for 7 days, jungle buddies fungus clear tablets, and salt/waterchanges. Can anyone give me any suggestions please?!?!?!