UC is a chronic illness which requires maintenance medication to stave off flares. You really need to give the drugs a fair try. I would caution you about eliminating drugs in favor of the SCD diet but it's your life and your choice. It's been proven that the immunosuppressants are safe however long term prednisone use (long term meaning more than 4 months) is not recommended. Try and work with your doctor and continue with the SCD diet. The critical factor for you right now is to prevent this flare from getting worse.
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