I don't know if once you are on January patch, you can revert back to November build for LOS... I remember reading somewhere that if you wanted to try the December build you would have to be on December patch... Cause you would be unable to flash build on November patch ... Confusing stuff but yeah.. I have been on the first build since los was first released and waited to update since November 7th if I'm not mistaken... I updated directly through LOS recovery, rebooted recovery, flashed Gapps, rebooted recovery flashed magisk and voila