I'm sorry to hear you're having a hard time. I don't post often but have followed your story as I think we are of similar vintage.
I don't know about PAWS but I know that as I've gotten older I've had increased issues with alcohol the day after, even following one glass of wine. I'm not sure if you drink, but if you do, I can relate to many of the feelings you describe. I also recall that you are/were prescribed gabapentin? It was added to my pain management plan this year and I've had a tough time with it: extremely drowsy 30 minutes to an hour after taking, wide awake 2 to 4 hours later. I recently tried to stop completely but anxiety, depression and a host of physical symptoms kicked in.
Perhaps none of this is relative, but I do wish you the best in finding an answer, it stinks to do all the work of coming off opiates and not be emotionally and physically rewarded.