There are no meds to speed nerve recovery. The myelin sheath does not heal very well at all. The nerve fibers within the myelin will heal if the myelin is healthy. There are nerve specialists who do microsurgery to help the myelin sheath heal. Good nutrition of vitamin B's and folic acid are important for nerve and myelin health. There are some electro stimulation therapies that can help desensitize sensitive nerves.

Do you have any swelling left? Maybe you have some residual capillary damage to heal. Does ice take away the pain? If so, maybe the nerves can be blocked so they are numb. Having a numb spot on the scalp would not be a big deal once you got used to it. My wife has lived with facial nerve damage for 20 years. You get used to it.

Maybe you need to get a consult with a peripheral nerve specialist if there is one in your area. There are some super specialists who do nerve transplants and myelin transplants. They commonly harvest good nerve from the ankle or foot.

You may still need to wait to see if there is any more healing to come.

My best to you.