I have a similiar story and ended up going to Remicade - and it still took the 5th infusion for me to get to a place where I could go taper off Predisone (starting at 40mg) - but now I am off the Prednisone and just on Remicade and Imuran - I had been on the Predisone for about
14 months and attempted to taper at least 3 times before it worked. Good Luck - I know it is hard