I think you need stronger medication if you flare every time you taper pred. It's really not good to be on long or yo-yo courses of prednisone. I have osteoporosis from doing that - mostly my hospital's fault but I wish I would have started biologics sooner.
And yes I felt great on 30 mg. It didn't matter how long i stayed on a high dose, I would always flare while tapering.
How long do biologics take to work?