Getting your weight down is a key component of lowering your blood sugar. That largely is calorie control. Write down everything you eat and the associated calories. You will note what items to mimimize w/o starving or not enjoying foods you like. Just keep those calorie counts down and your body will burn calories off your waist albeit slowly. Exercise helps to stimulate fat burning but it generally is a long slow process to lose and keep off significant weight. Good luck on that long process.

I’m only 5’8 and got up to 270 as I gained roughly 100 lbs after surgery 3 yrs ago. Been serious about losing weight since winter this year. Down about 40 pounds. About 4 pounds a month. No drugs for weight loss. Low end of prediabetic range. A1c “normal”. I still eat the things I like just not everyday or even every week. If you are full diabetic carbs will be your pain point. Good luck.