I have an autoimmune disorder and i want to warn you that stopping the steroids may cause your condition to regress quite a bit. I have used corticosteroids periodically for my condition and it helps cover the condition during disasters but theyve never caused the condition to go away, it always comes back after i stop them. Albeit in a better state i can manage more easily, but it's 100% possible to regress all the way back.
So please be careful after you're off the corticosteroids to not restart the things that might've contributed. Good luck, autoimmune disorders are hell.