cani your neurologist is very inconsistent which im sure you realize. he says you can work with pn but then tells you to rest more, work 15 minutes and rest 30 minutes. there are no jobs in the economy where that is possible.
Many people with PN are treated by neurologists or even GP's for pain since most people with pn are treated with antidepressants and anti seizure medicine for pain. Not many use opiates since they are of limited value in nerve pain and consequently dont wind up using a pain management clinic.