There are enough items in a level such that just by doing 20 lessons a day you can still level up in the least time possible.
There is a trick though, you do need to do all radical lessons as soon as you level up (sometimes it’s slightly more than 20), and all kanji lessons that unlock once you guru the current level radicals.
So what the routine would be after leveling up: first day do all radical lessons, and review them when they come up. Every day after that you do 20 kanji lessons (until the radicals are guru’d). Once the radicals are guru’d do all remaining kanji lessons in one session, and review them when they come up. These are the level-up critical items.
After that do max 20 vocab lessons a day until level up. Adjust this number lower if you have too many apprentice items. Vocab lessons aren’t a priority, they will clear up eventually by doing them like this.
Doing this will require you use a mobile app that allows sorting your lessons to prioritize radicals > kanji > vocab, or a userscript. You can find out more about this in the ultimate guide (My Journey of 368 days (+ The Ultimate Guide for WK 📖 ))