As I mentioned already above. you can downgrade if you are confident in your abilities to perform a hard mod.
https://github.com/Plailect/Guide/wiki/Hardmod-Downgrade
https://gbatemp.net/threads/tutorial-noob-friendly-nand-dumping-2ds-3ds-3ds-xl-n3ds-n3ds-xl.414498/
Just be sure to pay attention that you are following the correct steps for your New 3DS. But as I said also you risk bricking it that much easier if you are not careful. Otherwise you should probably wait like the majority of users to hopefully see software downgrade options to be fixed on v11 and possibly above.
I'm kinda scared as I've never used a solder IN MY LIFE and some people say the new gateway apps could work or with a little fiddling we could get memchunkhax2.5 to work.