Hello,
Since there are no concrete medical studies backing TENS as helpful with neuropathy, I really suggest to always follow the directions and instructions of your neurologist, off course provided you have one and a good one at that. Hopefully one would have had the right tests to at least obtain a diagnosis and then see if there is some type of a treatment plan not to cure neuropathy which, which currently to my knowledge, has no cure as of today, but at least slow down its progression. Sure you're aware that something might work for someone and may not work at all for someone else. Same neuropathy, different symptoms for different bodies, and different progression with different bodies, and different bodies respond differently to everything people have tried so far to alleviate some of the pain.
Best wishes,
gus