Upgrade should be a challenge! Here's how to meet that challenge. Study "hard" before! Ground school is 5 full days of lively discussion/ participation! Know your books before starting!
In the Sim you should see just about everything in the QRH! Read it before you go. Think about the steps of each malfunction & why it is in that order! The first 5 or so lessons you will learn what could go wrong with a CRJ. The good news is your check ride will be very straight forward.
Simply put, come prepared!