Loukay1 I read a previous thread that you started a few months ago.
I'm not familiar with peripheral neuropathy starting in the legs rather than the feet. That got me thinking. I usually look at the side effects of the person's medications first when a symptom is unusual and not easily explained. I didn't do that with you. Apologies...my bad.
Sometimes, a "symptom" is actually
medication side effect. I did a search on "glipizide side effects" and found this listed under "Less Common" side effects... "burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings" here...
https://www.drugs.com/sfx/glipizide-side-effects.html
Are you still taking this medication?
I know you're likely still struggling with figuring out how to make the low carb diet work for you. We're ALL terrified of eating a higher fat diet initially, myself included, but it takes away the need to eat every two hours. I don't know if this will reassure you or not, but I've been using the low carb ketogenic diet for 4+ years and my lab work continues to be quite good. Diabetes is essentially a "carbohydrate intolerance". Medication can work with the low carb diet, but only works temporarily without reducing the carb load.
Perhaps you could revisit learning about the low carb diet by becoming a member of DietDoctor.com for just a few months so you can get more familiar with how to do it and how it works. I personally learned so much by watching the videos and movies there.
After you've made some progress with your diet, you could then read Canadian nephrologist Jason Fung's newest book, The Diabetes Code (2018). There you'll learn another strategy to manage your diabetes, intermittent fasting. You could also listen to any of his recent lectures on YouTube.com.
One of the things that makes me uneasy with glipizide is that it forces the pancreas to produce more insulin, hypos are a common side effect (1 to 10%), and while the medication will likely improve your glucose levels, at the same time, it will worsen you insulin resistance. If you decide to try eating low carb again, be sure to reduce the dosage of the glipizide first. Hoping, hoping your symptoms are a side effect of the medication. If it is, stopping the medication my cause the symptoms to subside.