Well, as one who has had a problem with A1c levels for many years, what is your weight, your body mass index
From my experience, a significant decrease in A1c correlated directly to a weight loss and BMI decrease to say 29 or so.
The lower A1c preceded the weight loss which at the time was ~7% higher than today. I aim for 25-50 net carbs for the day. Not sure about the BMI but I’m 6’1” and 195 lbs.