Only burning feet, no numbness, no cold sensations?

Your fasting glucose was fairly normal. The response to the glucose solution
was high. This is called post-prandial elevation, and occurs in many so called normal people. You can control this with diet, by avoiding high glycemic carbs, and eating wisely like you are doing.

I haven't seen many studies to show how after discontinuing Risperdal/Zyprexa if the diabetes risk goes away...whether it is permanent or not.

Another thing you can do is take thiamine 200mg/day in divided doses. Thiamine helps metabolize carbohydrate and also helps reduce burning pain. This may work for you.

Do you know your B12 actual test number? If it is below 550...I think you should do the B12 we all use here... 1mg methylcobalamin by Jarrow. We get it on line at www.iherb.com or other discount vit places like Vitacost.

Fish oil also helps with neuropathy and helps keep the nerve myelin sheaths, intact and healthy. Not all fish are equal in fatty acid content.

These are beginning ideas that may increase your health, and may reduce some burning. If you were elevated glucose for many years and did not know it, it could have led to your being more prone to diabetic neuropathy.

If I were you I'd start here. If you are on other drugs now, you can PM me with those, because some drugs do deplete nutrients and have a negative impact on health. I'll look them up for you.