Hello there, From your description I understand there is only one clear information that one day fasting reading was 6.8 mmol (122 mg) Now the OGTT (Oral glucose tolerance test) is the gold standard to know your diabetic status. I need to know the exact fasting value and 2 hours after glucose drink what was the value to tell you whether or not you are a diabetic.Currently assuming that fasting was 7.5 and post glucose was 11, I can tell you that you are a prediabetic which means you are at high risk of developing diabetes but not a diabetic yet. SO your doctor advised you to come back again in 3 months and do the HbA1c. Till then do not ignore the problem and try to change your diet by reducing carbohydrate content of your meals, reducing sweets and sugars. Include exercise in your daily routine. This will help to control sugars and delay the onset of diabetes. Even as a prediabetic you may benefit from some medicines like Metformin which can delay the onset of full blown diabetes.Do discuss with your physician about this drug the next time you visit. Hope this helps. Take care.