HI! Welcome! This is a wonderful place for support!
It's so hard to point you were to begin, but you have made the first step by seeking help. There is a special section for diabetes support
here, and a general Dieting with Obstacles section
here. Both of those may help! And of course there is a specific section for weight loss support
here.
Is there a way to discuss diet with your doctor at all?
As for all of the stress. . . that tough! You have a lot on your plate (no pun intended). I have a hard time dealing with stress, emotions, etc etc, without eating for comfort or going straight into a binge.
My best advice is to come here, daily! You will figure out what will work for you. To start, perhaps, cut portion size and add some activity into your day.
Good luck! Hope to see you around.