Hello.

This is something that can be solved if you communicate your problem with the Lecturer. You need to express your concern to your respective teacher/lecturer in a respectful way so that they can understand and help you with this problem. Another option that you can go for,is that you can take extra classes to understand the subject better. Either way,it is important that you give your studies priority and do the things necessary to make it easier for you and score better. Best of luck!!