How should I spend my time tonight on school work?

Should I study chapters for an exam on Friday
and then tomorrow start on a 6 page essay that’s due Tuesday?
Or have it be the other way around? Reason why I don’t want to do both is because I procrastinate easily and I just want to focus on one subject. Also I lost all of Saturday to write my paper and some of Sunday for personal reasons. And I’ve been told it’s better if you study a day before a test.