Okay so I while I gave up again on my kingdom hearts game, I decided to make an animal crossing game

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Anyways, I made the tile-sets, auto-tiles, and sprites and stuff, but now I'm stuck.
In animal crossing there are 4 seasons like in real life.
During those 4 seasons the grass changes color and so do the trees. I just wanted to know. How would I change the tileset of a map when the season changes.
I'm using Complete Climate & Time System I think it's called. So it has variables for dates and season, so I could probably figure that out. The thing is, I really don't know how to change the tile-set without switching maps. If i switched maps then the animal events would suddenly reset, and I'd really prefer that doesn't happen.
FIGURED IT OUT