Suggest Treatment For Weight Loss When In Pre-diabetic Stage

Hello Doctor, I did a master health check-up in November and got to know that I am lying in pre-diabetic stage FBS was 135. I was advised to do diet and exercise, the levels had reduced in a months to 104.

I work out in gym and got a BMI full check up done, I have a more fat percentage and Abdominal fate is more so my gym instructor asked me take protein supplement with 1 table spoon of Glucose. I am reducing weight and inch loss is there. Now last week the level has increased to 108 FBS but PPBS is 109. Are protein and glucose affecting my blood sugar levels?

Please Guide me if I need to stop.