Hello @kle, I would like to add my welcome to Connect along with @hello2 and others. I was diagnosed with idiopathic small fiber peripheral neuropathy without have a skin punch biopsy although it is the gold standard for diagnosing neuropathy. I posted my neuropathy story in another discussion here - https://connect.mayoclinic.org/comment/310341/.

You are not alone in your concerns about the progression of neuropathy and it's good to be searching for answers. Here are some discussions you might want to read to find out what others have shared:
--- Chronic Fatigue Syndrome and Small Fiber Neuropathy: What helps?: https://connect.mayoclinic.org/discussion/chronic-fatigue-syndrome-and-small-fiber-neuropathy/
--- What helps the symptoms of Small Fiber Neuropathy?: https://connect.mayoclinic.org/discussion/tingling-from-small-fiber-neurapathy/
--- Neuropathy Pain at Night: What helps?: https://connect.mayoclinic.org/discussion/night-pain-2/.

Did you report your adverse side effects to the Vaccine Adverse Event Reporting System (VAERS)? - https://vaers.hhs.gov/reportevent.html