Welcome to this forum Joca,
The healing process is very slow but once your nerves are in the right environment they can and do regenerate,
mine took 3 years to heal and mine were only my feet caused by a prediabetic state, but to nourish your small nerves i suggest you get some good quality vitamin B multi, take 1 a day and if you can get some B12 methylcobalamim 1 -5 mg daily is a reasonable amount, but take the b12 seperatly to the multi B, it works better that way and drinking plenty of water has a lot of benefits as well.
I am sure other will be along shortly.
Brian