Breakfast and lunch have little effect. If you don't eat too much, you will generally digest it. Dinner is very important, so you must exercise restraint. If you can't stand it, you can only eat vegetables, especially within three or four hours before going to bed.
Of course, there is more exercise. Yoga is good, but it needs long-term persistence.
There is a popular way to lose weight at high speed. Don't eat or drink the first day, and drink water or something the next day. I don't recommend this kind, it's not worth the loss. Thin and sick people had better not lose weight, which is easy to rebound …