Hi smitha
Thanks for sharing your good news. The answer to your question a non diabetic HbA1c is in the fours. Your HbA1c without meds is a great achievement so very well done. You may with a further reduction in carbs. or a better exercise regime get close to the holy grail of a non diabetic HbA1c. It is a shame the metformin had to go as it can reduce the HbA1c by 1.5% that may take you to 5. A figure very few achieve, have you tried the slow release metformin, many find it more tolerable.
Very well done and keep giving us the good news and motivation.
Have a great weekend, Eddie