Your fasting blood sugar is well controlled, but your post-meal sugar levels (200?240 mg/dL) are likely contributing to your HbA1c of 7.4%. The medicines you are currently taking, such as Acarbose, help control blood sugar after meals, but your doctor may need to adjust the dose or add another medicine such as a DPP-4 Inhibitor to improve post-meal sugar control. Do not change your medication on your own. Please consult your doctor with your blood sugar records so that your treatment can be adjusted safely and appropriately.