Thanks for posting your query.
Let me know the type of insulin which you are using.
Your blood sugar fasting is controlled as you are using metformin
You should consult with internal medicine specialist/ endocrinologist
and should go for thorough check up.
Your postprandial sugar must be in controlled range as complications due to diabetes
is associated with high postprandial sugar.
You should take DPP I'VE inhibitors along with 50/50 insulin on written prescription.
You should also take voglibose
three times in a day.
You should also follow dietary changes as suggested by dietitian.
Dr. Mayank Bhargava