My response is in regards to meds (which I realize you want to get off of). However, I've used amitriptyline for both CRPS and SFN and wonder if you've tried it at any point? I had SFN in my feet for a year starting in 2005; then the following year developed CRPS resulting from thumb surgery. (Fortunately I recovered from that in 9 months with lots of hand therapy). For the CRPS I took 75 mg. amitriptyline divided through the day, and for the SFN which has returned, I take a single dose of 60 mg. before bed time. The only significant side effect has been dry mouth. It definitely helped with the CRPS pain. I don't think it helps with my SFN pain, but my pain is mainly at night and the amitriptyline does help me get to sleep and stay asleep. This and medical marijuana have allowed me to avoid having to try any other meds which I fear would have worse side effects. Good luck with finding answers and relief.