Limitations, immediate action items is step one. Once you have those down cold, start looking over your flows, call outs and profiles. Practice them with your partner every day, and drill each other on your limitations and immediate action items. Before each lesson in the IPTs, go over the expected material with your partner and chair fly the whole thing. I found it helpful to throw a tennis ball against the wall while practicing my call outs. Helps your brain focus on what you need to remember and juggle a different task which is good practice. When you get to the sim keep doing it. Every day.