Kind of lost on how to progress, looking for a nudge in the right direction. (Spoilers inside)

So I’ve /s Gotten to room 45/s and /s beaten 4/8 inner sanctums, while unlocking 5 /s and I’m just not really just how to progress much more in this game. I’m looking /s ways to get info on the remaining 4 sanctum singles beyond just stamps and the classroom /s and /s trying to figure out what the hell the microchip thing is about /s but I just can’t seem to find any new breakthroughs. I’ve /s unlocked most of the books in the bookstore except the drafting manuals and read them with a magnifying glass /s and just nothing seems to come to me.

Does anyone have any non-spoiler nudges in the right direction? Is there something I should be focusing on or looking further into? Kind of feeling stumped right now.