I'm in a hurry to explain, you still have knowledge in your heart. What should I do? As a teacher, I give you the following advice.
First, you have to face the reality, because it is a fait accompli that online classes can't be heard well. You should face the reality, and then, you should keep calm. Being too impatient at this time will not only help, but also confuse yourself. Then, it is important to calm down and let your mood calm down. It is very important to adjust your mentality, and it is more important to be able to resist external temptations.
Second, organize your thoughts, see which chapters you have learned well and which chapters you have not learned well, and have a directory in your heart. Find those chapters that you didn't learn well and focus on reviewing them, focusing on trapping. You can watch the playback of the teacher's teaching video.
Third, make a strict timetable, including what to do from morning till night, whether to attend class or do homework, or take time to make up for the gaps in front. Tidy up this time, and you will find that you have time to use. At this time, time is too important and the focus is too important. So, you should try to squeeze time and race against time. Time is water in a sponge. There is still room for squeezing. Grasp the key points, from point to area.
Fourth, after the school starts, there is still a transition time from online classes to regular classes, but this transition time will not be too long. We should make full use of this transition time to check for leaks and fill gaps.
I hope my suggestion is helpful to you.