do you mean you havent showed up to class so far, or you currently only show up to half? you should start showing up to all tutes and preferably all lectures but if you dont you'll need to study more
i stopped showing up to all lectures because i thought i was too behind on what we're learning and wanted time to catch up, which i dont think was a good idea but i still passed everything because i used the time before final exams well. usually past papers are really similar to the paper you'll get so as long as you can do those you'll probably do ok. plan yourself some hours each week where you study for law and then outside those hours you dont need to think about it. dont be worried!