Keep all the material (textbook, prints, image scans) required for the exam ready in one place.
Syllabus for the exam
Notes, printouts, pdfs, links
If you have spent your time procrastinating then start now. It's okay, you kept thinking that you will do it later since you had time. Start with the an interesting topic to gain momentum. Now, write down the list of topics you would be able to grasp that are useful for the exam. Do active practice, write them on whiteboard (if you have one) or a simple paper and read out loud. Do not keep score too high. Increase goal with preparation.
If you have studied well with planning over last 4 weeks or so, then note down the key points and topics. Make sure you are conversant with them first. After that increase your span to the topics that need active attention. Write them down as bullet points with reading out loud.
Do a small test, for example for a two hour exam - take a 20 min test to assess the exam readiness. This is in the before the deep revision. So, that you could identify the strength points and weaker areas. In this example, 5 out of 9 questions are correct - so let's work mistakes.
Revisit assessments or test papers you have done previously with their answers. (It helps a lot!)
Eat a simple meal wholeheartedly. Drink plenty of water. Of course, shower please. Shower won't decrease your chances of success. My Math teacher used to say "if you want to by heart, take a shower in the morning and start reading - you will do great". This works for theory exams!.
After every two hours, take a walk outside or inside, for 5 - 15 minutes.
Make sure you have the relevant items ready.
Pen / papers
Exam hall location
Mode of transport and backup plan
Be determined and focused. You will do fine.