i really don’t gaf anymore and it’s scaring me

I’m an overweight 22 yr old woman and i have really bad depression. I get so depressed and overwhelmed with college that I stop taking care of myself (as in, i start eating unhealthier). I notice that when i’m in periods of high stress, i tend to eat chocolates and stuff. I was diagnosed with prediabetes in July 2024 and my initial A1C was 5.8 and now it has increased to 5.9 (as of nov 2024). I’m really worried because i haven’t made as big of a change as I should, and I know that I really need to. I really don’t want to have type 2 diabetes at a young age. How do I stay on track with my lifestyle choices during periods of high stress where i’m tempted to indulge? Also, how do I stay strict to a low-carb diet during the holidays?

Pls be nice, ik i’m fat and sad lol. I just could really use some advice for people who have been in a similar position.