I believe it is fusee that will loo aunch atmosphere, but I don't know how you set up your switch. Tegra has a payload that boots straight into atmosphere you can use. What I do with mine is hit the launch cfw on the left and then boot emunand where that loads atmosphere for me. I used the below guide, which the step I linked to has a download link for atmosphere on it.
https://nh-server.github.io/switch-guide/user_guide/emummc/sd_preparation/
Also since the update I've noticed that if I transfer my save on the same day it's created the turnips spoil as if time traveling occurs, but if I have it set to the day after my first villager moves out even though flag24, or whatever the force move out one is, is set to 0. Is there any workaround to this besides using my unpatched console? As I don't want to go online with it.