The HbA1c is measured in Mmol/mol, the blood sugar machine measures in mmol/l or mg/dl. So they're entirely different units. (A HbA1c is also an average blood glucose measurement of 3 months, the glucose meter measures what your bloods are doing right that minute). So let's start there. What is your meter showing you? And what do you eat and drink in a day? Some people think they're doing low carb, and they're far from it. So let's get your current glucose numbers straight and see whether you're actually doing okay or not, and sort out any possible dietary problems, if they're there.