Just don't eat meat, at least get sick and suffer less, and not eating midnight snack is the way to keep fit, and your body will be healthy. In fact, it is enough to reduce it to 65 kg, not too thin. Eating vegetarian food at first will be very light, and it should be able to maintain 60-65 kg after it stabilizes. Don't worry. If you really lose too much weight, replace leafy vegetables with starchy vegetables. If you can't lose weight, you must eat too much oil.