Exam preparation starts in Week 1. From your Course Outlines, know how many exams you'll have, how much they're worth and (if possible) what they'll cover.
Each week, use the readings and notes to learn - and revise - the skills/content solidly, so you aren't piling on a lot of new stuff in the final fortnight. That includes making summaries of your readings, and synthesising each week's notes as you go. Especially if you find the material forgettable, make this part of your routine so it doesn't feel like extra work.
3-4 weeks before the exam, you'll usually get more information, including the number/type of questions, content covered, time and venue (if you don't, ask).
Prepare any permitted cheat sheets or notes, but don't rely on them - train yourself to need them as little as possible.
For time-limited exams, map which questions you want to have reached quarterway through, halfway through, three-quarterway through, and try to stay to that itinerary.
Practice tests are sometimes available, or tests will overlap with assignments.
In the final week, keep your habits as normal as possible, especially eating and sleeping.
Visit the room to get a sense of the place, especially if you haven't been there before. For take-home exams, prepare an uninterrupted, secure, quiet, well-lit space.
Read the instructions and (if you have the flexibility) know what order you'll take the questions in. For longer-form questions, jot the outline or a plan. Be clear about what you have to do, especially if you're given a choice of questions.
If you know you're running short of time, go through answering at least something for each question.
Try to leave 10 minutes at the end to go back and look over your answers, correcting any simple mistakes and adding, expanding or clarifying as necessary,