I don't consider myself a succesful pred taperer but I can tell you that pred withdrawl can have symptoms that mimic UC. So, you can expect diarrhea, fatigue, fevers, etc. I can't tell you how to differentiate between an increasing flare or pred withdrawl but your GI should be able to help you. You are wise to try and get off of it. Even at low doses continual use is not a good idea.
dx proctitis in 1987
dx UC in 1991, was stable until 1998
1998 started prednisone, asacol, pentasa, nortriptylene, ativan, 6MP, rowasa enemas and suppositories, hydrocortisone enemas, tried the SCD diet, being a vegetarian, omega 3s, flax, pranic healing, yoga, acupuncture, probiotics
2000 lost all my B-12 stores and became anemic
2001 opted for j-pouch surgery- now living life med-free