I think you might be tapering down too fast, and I would do what you suggest and stay on a higher dose for a while if it were me. I don't think going up matters, it's coming down that needs to be very gradual. What else have you tried, asacol?
It's funny, some GIs rely on prednisone too much maybe, and others want their patients off of it before it has had a chance to work!
49 year old female attorney, diagnosed UC/pancolitis 1985, no surgery but much suffering.
Asacol/5ASA 6x400 mg maintenance for 20+ years; use prednisone & Rowasa for flares.
August 2008 sought care of naturopathic doctor. Food sensitivity test showed gluten, other intolerances; started diet without gluten, soy, dairy, tomato etc. Replete probiotic first, then Forte pills.
Achieved remission for the first time in many, many years!? Seemed so, but colonoscopy Oct. 6 proved not so, heavy inflammation in ascending colon & will be using Rowasa again. But I AM better.