I do remember I also got 2 questions about an IR but they included an IR graph, so I was able to get somewhat of an idea of what they were asking. I can’t remember what the questions were asking. Too long ago.
Oh and Kaplan does seem to make things harder sometimes when they really don’t need to.
Definitely do not try to memorize the charts. Maybe 5 or 6 main points about where main things show up on the IR and NMRs.