Need Advice: Shedding/Brushing

Hey everyone. I need some solid advice. My boy has basically been blowing his coat non-stop for the last few months. I brush him at least once a day, with two different types of brushes. One is an undercoat rake brush, exactly like the ones you can use on pomeranians, and the other is a dematting comb. Nothing changes. I can't change his food due to severe IBD. He gets periodic baths as well. Nothing has helped this at all. The normal day to day wispy shedding isn't a problem. That's cats for ya. But he's literally blowing his coat like a husky. He used to do this for a brief bit during seasonal changes, but this is different. Maybe there's a better brush I need to use? Or maybe more frequent baths? Any suggestions on what I can do to help with this would be super appreciated!