I was diagnosed with RSD in 1989, full body. I was on Fentanyl duragesic patches 100mg, plus ms contin(morphine)100mgX 3 daily plus dilaudid (morphine) for break through pain. My symptoms of withdrawal were, flu like, pains and aches, burning skin, tremors, sleeplessness, diarrhea, anxiety, agitation, confusion and some symptoms lasted for 8 weeks. Yours may not be anything like mine, given the amounts and time of use. I was given Clonidine for withdrawal. There is also a drug called Suboxone that can help with Opiate withdrawal, although the doc must be certified to administer. Suboxone is also beginning to be used for the treatment of pain, but this is relatively a new use for this drug. My drug of choice is oxygen. HBOT has helped me, more than anything else. I wish for you the best on this endeavor. Plan for this down time, videos, reading, music, walking seemed to help me, baths, anything that will make you more comfortable.
If you have any questions or need support I will be there for you. Lots of love and prayers, diana