Having auditory processing disorder is like all your conversations take place in some kind of stadium or subway station, even if you're actually sitting in a quiet classroom or even your own living room.
This is an ultimate guide, a masterpost full of links regarding every aspect of therapy I could think of.
I'm with you in the painfully liminal space of recovery.
It's okay if it takes some time to figure out what's going on in your brain. Maybe if I tell you these things, I'll believe them too.