Thank you so much!
I created the backgrounds at first in Blender in 3D. There are actually not many details, and no textures either, and the models didn't have to be game-ready "clean" (since I wouldn't use them in-game, but 2D background images instead), so this was rather quick to do. It was also very helpful because I could play around with the perspective before starting drawing over them for a consistent style.
For the character I already had a character design ready before the game jam started. Last year I had started a "drawing a witch a day" project where I created a witch character design concept. In the beginning of 2024 I spontaneously sewed a witch doll based on that. And this witch doll made of real cloth was the actual reference for this game protagonist. :) So I didn't have to do much think-work about that one, besides chosing the color palette for the different time settings.
And I worked through the whole two months. At first after work and on weekends, and then (I think the character animation alone took three of such "weeks"), I fortunately had two weeks of vacation where I was able to almost work full time on the jam. I didn't count the hours, but it was pretty much time after all, and for sure more than other participants were able to invest. I hope this isn't unfair in some way.