Post-Surgery Blood Glucose

Before WLS, I was pre-diabetic and opted for the surgery largely because I was worried about developing diabetes. At first, post WLS, my BG readings were in the 70's and 80's, but six months after surgery, they returned to the 90's. I'm two years out and my fasting BG ranges from low 90's to about 104. This is almost where I was prior to surgery. My PCP and surgeon are not really too concerned, but I am disappointed that I returned quickly to high normal. And again, I am back to being worried about developing diabetes.

Has anyone else returned to BG readings in the 90's? I'd love to especially hear from anyone who is years out from surgery.