I have had neuropathy (diagnosed) for over 20 years- but has been escaping the last 5 years. I am healthy, eat well - have eliminated sugar, starches and processed food multiple times without any effect on my feet. My pain is worse on left and like yours about 2-3” pass my ankles now.
I used to walk 2-4 miles three or four times a week prior to that surgery nerve release on my three left nerves - now I am lucky to do a mile on a good day. Plus now my age (75) is catching up with me.
Also, I have tried all the magnesium turmeric B12 D3. In fact my primary care just took me off B12 because I was over 6000 on the scale when my blood work came back she said it too too high can cause neuropathy. Bullshit to her. I will continue to do my own research or I think now I’m going to consider a nutritionist although I feel I eat very healthy. I may be eating the wrong foods. My cholesterol is good. My weight is good. I definitely don’t see any more neurologist, primary cares or pain management helping me. I wish I was close to a Mayo Clinic or could find it empathetic doctor that would listen.