When should we do new lessons?

There’s a userscript > Lesson Filter Script < that allows you to choose which lessons you want to do. So if you want to do radicals and kanji first and vocab later you can. It’s especially useful when you level up to be able to do the radicals right away, imo.

As for when I personally do lessons, I usually do the first batch of radicals as soon as I level up, and then do 10 lessons every morning at 9am and 10 lessons every evening at 5pm (so I can review them all together at 9pm). I don’t follow this strictly because some days I’m more motivated than others, but since starting this system I’ve been able to maintain a nice pace.