Great question, and I'm sure I'm saying that because I had the same idea.
Unfortunately, most of the insoles I looked into say specifically not to use them if you have peripheral neuropathy. I ordered a pair anyway, walked around the house for a few minutes, and returned them. Made it worse instead of better.
Having said that, you may have a different experience.
I do wear barefoot shoes, which give me more feel for the ground and make me more stable. If you search the Mayo blogs for that term, you'll find more feedback. Some people like them, some people hate them. They absolutely take some getting used to, and in my experience, I needed to order a larger size than I expected to keep my toes from bumping into the front of the shoe.
@projfan
I also wear/like barefoot shoes but my podiatrist says they provide no structural support. Yes, I found that you need to buy a size larger than usual. Haven't tried the above-mentioned innersoles but have used soft/thicker ones in left shoes only. My left foot sometimes swells a bit in hot weather & my right foot has atrophied somewhat. I seem to be able to wear my barefoot shoes for longer periods than any others, even house slippers. Otherwise, I am changing shoes frequently.