still working with small fiber neuropathy

I also have sFN with autonomic disfunction, waiting for some more tests to be done. I was prescribed anphetamines for the brain fog but I refused to take them because of the secondary effects, my doctor then switched them to vitamine C and arginine suplements. I also take magnesium, alpha lipoic acid, l carnintine, B12 and lots of caffeine , etc.. It helps a little bit and allows me to keep up working.. I haven 't caught a cold in the but I continue to feel drowsy and sleepy but at bedtime I sleep bad because of the neuropathic stress I feel in both legs even though I take pregabaline and amitriptyline. I sleep with a cushion under my lumbar area, I feel better that way because I also have stomach issues, I have restless sensations all over my body