Here is my personal approach
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I pace my lessons to 10-15 per day, 20 max. I ignore the pile of lessons waiting for me once I level up, because I want to keep steady schedule, and learning more than 15 new items per day is too hard for me.
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As for reviews, I try to finish all pending pile each night. I prefer to spread reviews thru the day since I’m working at my computer anyway
Two reviews sessions per day may not be good for new Apprentice items, since two first SRS intervals are 4 and 8 hours. Common recommendation is to follow schedule (for example 8 am lessons, noon first review, 8pm second review).
People do extra reviews using Self-Study Script. I run it thru Apprentice Kanji pretty often.
Working on leeches reviews is also super beneficial, but I fail to do it.
There are many threads discussing strategies for efficient WK learning. One guide is: