Healing nerves takes time. You need to improve the circulation to bring in the healing nutrients. So epsom salts soaks are an easy non invasive way to do that.

The nerves in the periphery are of 4 types. One is a fast nerve that attaches to tendons, to tell the brain where the foot is when in motion. The other 3 have one unmyelinated C fibers which are very slow, and 2 others that have some myelin (myelin = insulation)

Neuroscience For Kids - conduction velocity

The yellow in the above link is the myelin on that nerve type.

When you move around PN can become less felt, as the nerves with myelin cover up the signals from the C fibers and the other two partially myelinated ones. Typical PN discomforts come when the patient is still.

There are people who have Morton's Neuromas removed who continue to have pain, anyway. They show up on this message board now and then.

Nerves are meant to signal things, and sometimes they continue after surgeries or traumas. That is just the way it can be.
I'd avoid ANY invasive procedure for now. Also use some Vit C
daily for a couple of months, 500-1000mg a day, to see it improves. There are studies from Europe about Vit C prevent RSD changes in feet and hands.