Question about NPC schedules and Scriptable Objects.

SO for the game, I'm working on(a farm RPG) I'm using scriptable objects for my NPC's schedule system. right now it only contains one month of data, 4 weeks each comprised of 7 days, which themselves have a list for me to add schedule times/position(picture below from the editor. it's just a series of nested lists). what I was wondering it. Would it be better to just have 1 SO for each NPC, or 4, one for each season/month? i feel like at this point just using 1 big one per NPC would be a good idea, but I'm not sure how resource heavy that might be. THank you all for reading any for any advice/help :D

[1]: /storage/temp/178001-image-2021-03-23-152444.png