It is a big question that how to be a good question. Every person has its own perception. In my view students should be to obey their teachers, parents, and elder ones first. After that, we can come to their study point. They should do their homework daily and should choose the subject of their interest.
@Ash-exe The biological clock in our bodies can be reset by adhering to structured daily routines. Try to go to bed every night at the given time. It's also not advised to sleep with more tensions and worries, so leave your tasks and ignore negative thoughts. Have a good sleep!