Hi, once I got my sugars down, lost weight etc, I experienced increased or flaring of symptoms, at first it is just about impossible to tell the differance between worserning of sypmtoms and nerve regeneration, with my case it took many months for me to realize the nerve were trying to regenerate, as the flaring eventually comes less severe and less often.
I had the same as far as tingling goes, one foot would carry on, sometimes the both of them would carry on at the same time.

Supplements that are known to help diabetic neuropathis pain is R lipioc acid &
GLA [(gamma-linolenic acid ] 480 mg daily, just be carefull with the R liopic as it can lower blood sugars.
If you are taking Metformin for your diabetes then it would be a good idea to supplement with B12 [ methylcobalamin] at 1 -5 mg daily, as metformin depletes b12 levels which is critical for nerve health.

Diabetic neuropathy is fully reversable, but please keep in mind this a very slow process, took me a total of 5 years to rid of it fully.

good luck
Brian