After watching videos and listening to some feedback from coaches, I realized that I was shifting up way too slowly. Instead of my upshifts happening as one quick action, I was engaging each step on its own. Let off throttle, pull in clutch, shift up, let clutch out, twist throttle.
I was losing all of my RPMs during that process. Started practicing at home on my Grom and actually felt that quick upshifts came naturally to me.
The upshifts and my increasing comfort at the KIC led me to cut my time by 5 seconds almost immediately. By the end of my two days at Yeongam, I was down to 1:54. Still 15 seconds off the pace, but I feel like my understanding of entry speed and my feel for laying the bike down and picking up after the apex with my throttle will be me to sub 1:50 times pretty soon (breaking 1:50 is my goal for the next KIC track day).