My plan is this: a cup of oatmeal in the morning, brewed with salt water. Plus a fruit, a banana or a papaya.
One or two meals at noon, and the rest are all vegetables.
No dinner, not after noon! If you are really hungry, eat some fruit or drink some yogurt.
Be sure to prepare oral glucose at night to prevent hypoglycemia.
In this way, the dosage of insulin is slowly adjusted, the appetite and dosage are reduced, and the weight naturally comes down.
Note: Be sure to check your blood sugar regularly and master it every time. In this way, the dosage can be well adjusted.
That's what I did. At least it worked.
Alas, poor DM, can't eat, and can't rest assured!