First jump scare got me! I think the first half of the game was spookier than the second one but I can't really explain why. I think it was the repetitive nature and the day system which made me on edge when something scary hasn't happened in a while.
In terms of improvement, I think you could have stuck with one or the other room type since the swap to the white one was pretty jarring. I think you could have built up more levels of the red room one and made it so that every day you had to go further and further or smthg. Also, in the second phase, I only got past it by luck from button smashing bcs I didn't know a sprint existed.
Overall your atmosphere was rly well done. The flickering lights and many shadows made me always worried smthg was going to jump out at me. Good job!