If you don't eat at night, you won't lose weight, which shows that your parents are stubborn and it is not easy to lose weight. I suggest eating an apple at night, going out for a walk, walking or running, and doing some simple yoga exercises to lose weight. This kind of exercise with fruit will have an effect in a month or two and it is not easy to rebound. There are videos of yoga and aerobics online, which are very suitable for people who don't like running. I hope I can help my parents.