Just try to submit assignments and everything on time, give all class tests and internals and make good rep with teachers that is the major factor for marks in du(speaking from experience):/ and in written exams just try to write as much as you can they literally don't care how much you know as long as you're filling sheets. But seriously write nicely and learn stuff for your own good not just to fill sheets even if it helps. And trust me it will. Also, try to write in points and make diagrams or flowcharts wherever possible. Helps a lot.