In-Out Games are a beast for me. Something that helped me develop my intuition about splitting boards was going through board set ups for games I'd already taken and writing out every conceivable board combination with the pieces. The key for me was to do this untimed. If I got upwards of a dozen, then I knew it would not have been helpful to actually split them up. This also helped me pick up on inferences I missed before. During BR for LG, I do this will all the games and it has helped me get down to the -0 to -2 range consistently.

The thing with LG is that the more you drill the better you get. It's hard to have unproductive practice time if you're putting in time. So, the"trick" to LG is to drill the same games over and over. It's a pretty unsexy answer, but practice really does make it easier.

Congrats on making it so far into the CC! Sometimes after taking a prolonged break from studying I can only get back into the groove by doing bit size chunks and working my way up to a more rigorous level of studying. I recommend you ease back into studying by doing a LG section or two a day and then going from there. Alternatively, just tell yourself that you only have to do 2 untimed problem sets from your favorite section.

Something else that has helped me get out of the rut before is listening to the 7Sage podcast for motivation. It's obviously not the same as drilling, but sometimes that 1 hour of passive listening puts me in a better mindset for studying and drilling than an additional hour of drilling would have helped me anyway. Rome wasn't built in a day.