Advanced Open Water and beyond or, a suggestion from the experienced
"If you are a doing continuing education course, Advanced Open Water or beyond why not give yourself a day before you start the course and have a pre-course diving day."
Even experienced divers, who dive regularly, when they change diving environments/locations they know it will take couple of dives to settle down and fully relax. There is a lot going on maybe they are using different equipment than they are used to, the need to get weighting sorted out and all dive centers run slightly differently.
So why not make you life easy and get the most out of your course.