Overwhelming frequency of lessons starting from level 40 + solution

But nothing is telling anyone to even level up in 7 days, let alone 3.5…

If anything, I think this indicates a problem with an individual’s process/routine. If you build a steady routine (e.g. do 15 lessons per day every day), then WaniKani giving more lessons is irrelevant because you just continue to follow your routine. (That’s a large reason I built [Userscript] WaniKani Lesson Filter by the way.)