How Can Severe Idiopathic Neuropathy Be Treated?

I have idiopathic neuropathy, very high pain. I take morphine/60mg 3xs a day, duloxetine/ 30mg/ 2 per day norco 10-325/ 4xs a day atorvastatin/ 40mg/ 1 per day bupropion 100mg a day meloxicam/ 15mg/ 1 per day, instead of ibupropion tamsulosin/ .4 mg per day for prostate zolpidem er/ 12.5mg at night to sleep Have tried many other drugs for the pain with no luck. i could sleep all day if left alone and am so tired that I take naps 2xs a day What could I cut down or replace to not be so tired. take antidepressants for high depression thanks in advance for any advice and yes I have a pain DR that prescribes most of these drugs