Hi Paul,
I'm no expert in this topic but as someone with MS for many years I've found some ways of getting at information.

"Idiopathic" means that there's no known cause. Since there over 100 types of neuropathy, it might be difficult to say what you can expect your neuropathy to do.

Some information is here:

Peripheral neuropathy: Symptoms, causes, and treatment

Lots of neurological problems are things you have to find ways of living with, I'm afraid. You try diet changes, you try different types of activity, reducing your activity, increasing it, exercising in certain ways, you try heat, you try cold, and sometimes you find that the whole problem will go away if you just change the way you hold certain parts of your body during the day.

We're all just groping around in the dark when it comes to a lot of neurological problems.