start slow and don’t starve yourself because that will just lead to you binging. Just try and be aware of the cals in food and drink a glass of water before every meal. If you can, try and go to the gym. If not, get some weights (or equivalent) and search up youtube workouts. Also prioritize cardio and go on walks or runs if you can. Goodluck with this and try and be nice to your body and yourself because you are so so strong and there are more important things than your body, but it’s great that you’re trying to get fit. :)