Why not lose weight first and then do something that fascinates you, so it's easy to forget to eat, and you won't feel hungry for a few days at that point (it's hard to persist for a few days). I like playing games, but not because I lose weight, but sometimes I am too busy to eat. If I play too late, I will remind myself that if I eat too late, the fat will stick to my body in circles and I won't even dare to eat. I am 156cm tall and weigh 40kg (not thin).

Or eat watermelon at night and have a cup of yogurt when you are hungry; And it is best to stand for half an hour after each meal (don't sit and lie down)