@Darbzixe which book are you talking about?? If he played a very minor part, I would say replace him with another person, and go on. This whole thing is making me so depressed as he was a person who's videos I'd watch to calm down when my anxiety would come up, and it's a very scary situation. Maybe write an authors note on the bottom of each chapter he was in explaining why you took him out and that it shouldn't affect the story in a major way. If it does happen to make a huge change, maybe explain in a short chapter after your most recent one, explaining how things changed so people dont have to go back and read all over again. That's just what I think though.