>>95351351Given that he had an opportunity for cathartic self-release in the way of
telling his mother to fuck off when she recognized him at the end of the season and he didn't take it, instead choosing to
give her comfort in her last days I'd say he has. Also accepting the job PC had for him, despite her saying "Listen, I fucked up and forged your signature," and not even hearing the pitch and having no idea what it was he'd be working on. Because BoJack realized that PC really HAS tried to do right by him in the past, and that for once he needs to be there for someone ELSE in their time of need.
I don't expect it to last forever, sometime next season
Bea will die, or
Diane and PB will divorce and it'll give BoJack the opportunity to do some really shitty shady shit with Diane or any number of other things which could knock BoJack off the wagon. But I do think that he's actually trying to make progress, and that Hollyhock really helped with that.