It all starts with carbs and the resulting high levels of insulin.
High fasting insulin will show you are on the path to diabetes ten years faster than yearly higher levels of glucose.
I found I was pre-diabetic a year ago. My PCP didn’t tell me, he just circled my fasting glucose of 117 and said nothing. I went online and was shocked to see I was borderline diabetic.
I went keto/carnivore, then six months later went for blood work. I insisted he add fasting insulin and A1C tests, neither of which he had requested in the thirty years I have been with him.
A1C is still a little hi at 5.7. Insulin is 11.7, would like to see half that.
Congratulations on your success.