You are in my thoughts and prayers. I am so sorry to hear your story. I understand chronic pain--it has ruined my life, but I do not take pain meds because I am allergic to something in them, I guess the opioid? All I know is that every one, even tramadol, made me so sick, I'm talking projectile vomiting--and if you have back and rib pain and are doing this....not good.
I think talk to a therapist or trusted friend, maybe, a doctor (you said you're a nurse) you can feel safe about the confidence...or maybe just start on your own tapering down? I know someone who did that herself, successfully. I think she did like one less pill a week and it took her a long time. I am here if you need to talk. Cindee