Small Fiber Nerve Neuropathy and exercise

I have been fortunate that my SFNN has been fairly mild. I take 600 mg of Gabapentin twice daily. I had been playing pickleball 5 days a week, with some pain on the bottom of feet. Since then I have had numbness in little toe on right foot. Neuro Doc said it was not numbness because it is not numb all the time. Regardless I do get pain in the toe even when not exercising. I have stopped playing and switched to low impact exercises. Question I have is
1. Does aerobic activity worsen the nerve endings? I have read some info that indicates yes and some that indicates no.
Anyone have any info?
Thanks