I was going to chime in and basically say the same thing. I didn't practice prior, I just went in with an open mind on improving skills. However as I have said many times, it was a cold shower and painful to break bad habits as my training had been mediocre at best up until that point. I applaud the DIR agencies for having a gatekeeper course. Get the recreational skills solid, and then move onto technical diving training.Stop practicing and take Fundamentals ASAP. Practice make permanent. You don't want to lock in bad habits. Get the training and practice what you are taught. You can take Fundamentals in two parts or you could even take it in a Recreational Configuration and then later do an upgrade to Fundamentals - Tech. The point being take it sooner than later.
Objective performance requirements matter.
To the OP, good luck and have fun. Don't focus on earning a rec/tec pass, just focus on improving skills. Long term, everything will come together. I would just be comfortable in the gear you will use prior to the course.