I was the same ! I started on Farxiga in May and so far I lost 27 lbs. I do excercise 5 to 6 days a week. Also very low carb diet.

I have actually LOST 75 pounds while on insulin by cutting my carbohydrate intake. I have also been taken off 2 orals meds as a result. I limit my carbs to 50 or less total carbs per day. I also normally eat 2 meals per day. Yes, my doctor knows and approves of my eating plan.

My doctor said insulin will make you fat.
I'm on insulin Lantus 50ml daily mornings and Novolog quick acting insulin 3X daily before meals.
Saxagliptin 2.5mg

I am a vegetarian and still have belly fat like you I am on Lantos and act rapid I tried Victoria prescribed by my specialist and lost my appetite and weight accordingly reduced but belly still fat

In my own experience when I found out Lantus insulin was responsible for putting up to 100'#s of weight on me I told the clinic staff "watch me get off of this" then I learned that most of the injected insulin have a side effect for weight gain. Is lantus insulin all that you take.?What is your A1C Number?
Go to researching this disease. You don't have to stay on insulin.
Go watch a few movies like "Fat, sick and nearly dead" 1& 2
"Fed Up"
Get off all processed, pre-manufacturered food and all fast food. Save your own life.
See a nutritional therapist. Or start reading books that can help you with your health.
"There is a cure for Diabetes " by Dr. Gabriel Cousens is one of my favorite.