Secondly, we need to find a good way to earn extra money, provided that we don't delay our normal work. Since it is extra money, don't expect too much. If there are special circumstances, give priority to with normal work.
Of course, it is best to have other skills to earn extra money. If not, you can go to some restaurants or sales departments as temporary workers. It will be more convenient to charge on time. You can work longer if you have more time, and less if you have less time.