A few things might be happening. If you changed your diet and started meds between your two A1c tests, your blood sugar average may have really come down, so you can imagine what it was before meds and the diet change. 7.8 is certainly better than 12.5 but it's not in the good range. You need it to be lower. Also, you might not be a type 2 after all. You might be type 1 or 1.5 or in a transition stage. In that case the metformin and glipizide might not be able to control the blood sugar because you need to be only on insulin. Your doctor should order tests to confirm if you are really type 2. Being on the meds you list, your blood sugar should be well-controlled. Finally, you say that your diet isn't helping. Why not? If you're eating bread, potatoes, cereals, etc., then you can expect high blood sugar and you'll need more meds to bring it down. If you truly go low-carb, your blood sugar will not spike and your meds should be reduced. So, if I were you, I'd be true to myself and follow a healthy diet to control the blood sugar and go back to the doctor and question him/her about
being tested to see if you have LADA (type 1.5) or if you are really type 1 - and I would ask to get off the BP medicine that has HCTZ. This also causes high blood sugar as I've told you. There are many BP meds available. I know your doctor says it doesn't raise it a lot? Raising it only a little is still too much in my opinion. The bottom line is I suggest going back to the doctor because your blood sugar is all over the place. I hope you are keeping a daily log of your blood sugar and what you're eating. You need to show this to the doctor.