This point has become most relevant as we are watching offline students shift permanently to our online batches due the covid crisis. The best bet there is to make the classes interactive, asking questions can help you in the long run, reviewing the previous classes, and reading in advance for the coming classes can leave you with some doubts which you can ask during the class. You are saving time that otherwise would have been wasted on going to the institute and coming back, you can invest that time into studying. Ha