Thanks for query on hcm.
Only fbs or ppbs within normal limits is not the criteria for medication.
You have to go for HbA1c
,urine sugar investigation.
HbA1c should be up to 6.5 is ideal.
Life style modification is necessary to control it.
You have to do exercise regularly and avoid sugar,starch containing food.
Avoid chocolates,ice cream,cold
If you able to manage it regularly than try to avoid medicines under guidance of your doctor.