Generally speaking, face-to-face teaching is more immediate. Be sure to attend classes according to the time. Some online classes can be played back, or you can choose when to watch them according to your own schedule. So you can arrange both according to your own time. When you have time, try to use them to teach, and use your own when you come back. In my spare time, I will study online classes again, so that the combination of the two will definitely have better results.