What your husband has is Chemo Inducted Peripheral Neuropathy (CIPN). I had 11 rounds of chemo after my Whipple surgery for stage 3 Pancreatic Cancer. My chemo was completed in MAY 2019. The neuropathy unfortunately has progressed from a minor tingling to a burning, tingling and numbness. I have tried various creams, pills, and treatments with no real help. I am in the process of getting myself off Gabapentin which my neurologist prescribed. I don't like some of the side effects (weight gain and a problem with my vision). There seems nothing will work for this type of neuropathy. Walking helps. Good luck to your husband.