Thank you for the response John.
A neurologist did tests in November 2019 -- I believe EMG. No smoking gun with the EMG test. Diagnosis was idiopathic polyneuropathy, possibly caused by pre-diabetes. A second neurologist, who I only saw via Zoom, said the even slightly elevated blood sugar could cause neuropathy, but that it was unusual that it did not start in the toes. Mine did not start in the toes, it started in the entire front part of the feet all at once (arches forward) and it remains mainly in the front foot. Massage helps it a lot -- I have a massage gun that helps but only temporary.
A chiropractor I went to thinks my back is the issue, but a specialist I went to see does not see anything of major concern in the MRI of my lower back nor in the Xray of my feet. The chiropractor thought cortisone shot in the back might help but the specialist thought that was unlikely, although that is still a possibility, I see him again in 4 months.