How can I reduce my Fasting blood sugar from 140-160mg/dl to 80/115mg/dl .I am 53 years old diabetes type 2.?

I am on drug 3 metformin 500 mg per day and 1 Glybenglimide in the mornning . Should I increase my drug? What do you suggest ?At the time being I have no access to Doctors. Thanks http://bit.ly/nZ1pcg