My poor Betta saga

Well I posted a message on here awhile back about my sick betta that
I dont know what's wrong with it. I still dont but he's still alive
after a month or so. He still has white patches on his skin and I am
not sure if its fungus or bacteria. His fins are all still there so
I'm confused anyway...

When I noticed he was failry sick I bough another smaller fish bowl for
him (1/2 gallon) so I can add medicine and change his water more often.
I had him in Jungle anti fungus which is blue for a couple weeks but
the white is still there. Now I have him in kanamycin which is clear
and I've had that in there for 3 days.

The white patches on his body are still there but he seems a little
more active then when he first started gettign sick. I'm starting to
wonder if I should stop medicating him for awhile and see what happenes
cause he's been in one medication or another for awhile now.

Also He still doesn't eat like he used to when I first bought him about
3 or 4 months ago. He'll eat a flake or so when I feed him then he'll
go to the bottom of the bowl and sit there for awhile digesting, and
maybe eat a bit more but he isn't gobbling them all up like when I
first bought him. (Oh by the way he wont touch freeze dried blood
worms, doesn't like them)

He'll swim around some, but a lot of time he'll be at the bottom of his
bowl. Also every once in awhile I'd use to put a mirror in front of
him and he's flare up like a normal betta. I figured that might cheer
him up. However about a week ago he stopped flaring at the mirror.
When he sees himself he goes to the bottom of the bowl and stops
moving. Like he is scared of himself.

I feel so bad I wish I knew what was wrong with him. Maybe he is just
getting old or something. I bought him like 4 months ago but it was
from a bet store so who knows how old he was then. Well I appriciate
any comments you have on my poor betta and I hope he is back to his old
self when I first bought him soon.

Nathan