so i've been studying NCPR but recently got a tutor who is teaching me with a different book and is asking me to memorize 10 characters each session - how can i use skritter to just focus on the new vocab so that i'm not parallel studying the NCPR. I've already stopped adding words from the NCPR list but it still seems to trump most of my study. is there a way without actually removing my progress on the NCPR list?