A lot of times we have folks training who are frustrated at not learning a new form, or set of techniques as fast as they think they should. I tend to think of all pre arranged movements as simply exercises, not unlike a push-up or sit-up. Knowing how to do the exercise correctly is important, but just memorizing moves doesn't mean much, we have to do the exercises to gain the true benefits. if you don't know your new form yet, don't worry...practice the ones you do know.
I figured out last night that since 1998, I have practiced PSR IlDan almost 16000 times, (16 thousand).
Most of the other forms and techniques probably almost that much as well. My point is that it does take time, Enjoy that, and just enjoy the exercises.