Can you take intermittent Family Medical Leave and cut back to part time? This will give your body more time to rest.
Orencia needs more time to work, BUT if the pain keeps increasing, call your doctor. It shouldn't hurt worse. I ended up on Xeljanz pills as my biologic, but I tried several, including Orencia, before I found the best one for me. You have to find the right one for your body. It has to do with B cells and T cells. Prednisone typically isn't used during this time because they need to know how you feel. Prednisone masks all of that.
This is the hard part. You may need to seriously look at cutting back on your work hours if you can. I'm not sure that FMLA covers everybody, so do some research. Do you have disability insurance? Would your doctor be agreeable to putting you on disability during this time?
Hang in there. It does get better.
KT