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There is evidence in studies that certain nutrients help diabetic neuropathy.

They are:
lipoic acid
acetyl carnitine
Vit D
Benfotiamine (a special form of Thiamine B1)

Most doctors don't follow this research so don't expect many comments from your doctor.

Here is a thread with links to read about them:
http://neurotalk.psychcentral.com/thread121683.html

If you decide to take lipoic acid understand it may lower blood sugar levels, and affect your daily insulin requirement. In the case of it alone, you need monitoring with your meter, and the doctor.

Here is one example about lipoic acid:
http://www.ncbi.nlm.nih.gov/pubmed/19019027

There is a link at the top of the page on the right for PubMed.
This is a collection of medical research on many topics.

You can search it yourself for "supplements diabetic neuropathy"
or just diabetic neuropathy itself and find zillions of papers on this subject.

You may need to look to your diet, and see if you are eating enough essential fatty acids, magnesium, zinc, etc. Diabetics lose magnesium thru the urine, for some reason, so you may need to watch that mineral closely.

Also you may need testing for B12, Vit D, and gluten intolerance.
Some people with gluten intolerance have chronic neuropathies.

Don't accept "normal" when you get B12 and Vit D measured...as US lab ranges are very low, and when you are low neuro damage is possible.

You are going to have to do homework here and read, and learn. Much of PN recovery is up to YOU, because doctors cannot or will not do it for you.