Take it easy between now and tomorrow. A lot of people recommend resting your brain the day before the exam, and IMO that is actually VERY important. Use this time to not even bother with anymore MCQs. If you're gonna study, stick to light reading or quick vids. And just do all the right things to get your brain ready tomorrow: Some exercise and stretching to get blood up there, eat good stuff and no junk food, and sleep sleep sleeeeep!