A significant number of type 2 diabetics can get back into the normal blood sugar range without medication if they lose weight, especially abdominal fat. Dr Michael Mosley unexpectedly found that he was a type 2, despite not being very overweight, he is a so called TOFI individual (Thin on the outside , fat on the inside). He shifted 20lbs and got, and kept, his blood sugar back within the normal range.
https://thebloodsugardiet.com/michaels-story/
ETA I’m not diabetic but I have successfully followed the Blood Sugar Diet just from the book and lost a lot of weight, I feel much better for it.