Is it possible to downgrade from Sequoia 15.1 to Sonoma without erasing everything?

I have an iMac 27" Late 2014 (4Ghz quad-core i7, 32 Gb ram), but it feels slower on Sequoia 15.1 than on Sonoma. Is it possible to downgrade from Sequoia 15.1 to Sonoma without erasing everything?

(Note: I read everything about uninstall, as well as backup then erase then reinstall on bootable USB drive, but too lazy to do all those steps, especially the backup)

submitted by /u/hoangdj
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