Yes its is possible
Type two diabetes is basically insulin resistance. If you have the genetics and eat a poor diet lacking in certain nutrients and high in useless calories, you will most likely become diabetic As the cells become more and more resistant to the action of the body’s insulin, glucose builds up in the blood… that’s diabetes. If this insulin resistance situation is allowed to go on too long, the body’s pancreas keeps producing more and more insulin in an effort to get that built-up glucose into the cells. This is the beginning of type two. Most people, in this condition, don’t even know they have it yet. Eventually, the pancreas cannot keep up and “wears out”, that’s when the situation goes past the “borderline”, or “pre-diabetes” stage into full-blown where medical attention is usually indicated. If caught early enough while the pancreas can still produce adequate amounts of insulin, a type two diabetic can manage with a healthy diet and exercise alone.
The doctor advised you to retest after 1.5 years but I think you should check after 3 months. Also check your HbA1C as this will give you the idea of whether you have maintained your average blood glucose good or bad for the past three months
Change your lifestyle, eat a low carb high fiber diet, avoid sugar/sugary items, lot of fresh fruits and vegetables having a low glycemic index, start a brisk walk, this will reduce your chances of becoming diabetic.
