Easy don’t calorie restrict below rda you’ll only damage your metabolism and get fatter afterwards. Eat meats with very low fat,chicken fillets,tuna,salmon,flank steak, with green vegetables or salad (no dressings or mayo). And eggs lots of eggs. No pops or juice drinks.
I went from 13’10 to 11’0 in a few weeks. It was easy while my wife sat crying in the kitchen working out what food she could squeeze into the weight watcher points she had left for the day.