Welcome @littlec74, Sorry to hear your husband is having such pain in his feet from the neuropathy. You might find it helpful to scan through the following discussion to learn what others have shared.
-- What treatment helps for feet neuropathy?
https://connect.mayoclinic.org/discussion/treatment-for-periferic-neuropathy/
The Foundation for Peripheral Neuropathy has a list of different treatments if you haven't already looked through them - https://www.foundationforpn.org/therapies/

Has he tried any of the over the counter creams or lotions for the feet to see if they offer and relief?