Hello im gonna be writing stuff sporadically into this comment section. Currently did my first playthrough, where I died cos I only managed to complete the first puzzle in time:
I did understad that I have to find a bookshelf and order books based on hints that are visible in the 'household world' - I knew this cos you told me that this was the puzzle. However, after having discovered all flower pot clues, I was just running around both worlds, trying to find the bookshelf. Finally I found it while I was looking at a poster in the library. Its to the left of that library, so me pressing E and it actually working was a pure coincidence.
I don't consider that good or bad, this is just me giving you what I experienced. Im generlly not adept at puzzle games so yeah. Do with this information as you wish
Anyways, the art / sound design / atmosphere of the game is bonkers. Its so good. Its crazy good.
Id recommend you give this to complete strangers to get objective feedback though.