Check off items as you accomplish them, and give yourself a reward for finishing the whole list on time. You can do this. Allow yourself to believe that. Avoid negative and panicky classmates when choosing study partners. On the night before the exam, pack a couple of sharpened pencils and a working calculator for the next day, and go to bed early.
Lack of sleep can magnify test anxiety.
Give yourself plenty of time to get to the exam site. Get there early. Sign up for a free monthly newsletter describing updates, new features, and changes on this site.