Now’s a good time to understand what it takes to level up if you haven’t already.
In order to level up in Wanikani, you must guru at least 90% of the kanji for that level. In order to unlock a kanji, you must reach its level and guru all the radicals it depends on. This means that for most levels, you must go through two stages: First guru all the radicals on that level, then guru the kanji on that level that you unlocked after guru’ing those radicals.
For all levels except the first two, the SRS intervals are 4 hours, 8 hours, 23 hours, 47 hours (the later two can be approximated as 1 day and 2 days). This means that you don’t have to do reviews at every hour of the day, you just have to establish a schedule consistent with the 4 hour intervals.
Friday 6am: Level up, do new radical lessons
Friday 10am: Apprentice 1 radical reviews
Friday 6pm: Apprentice 2 radical reviews
Saturday 6pm: Apprentice 3 radical reviews
Monday 6pm: Apprentice 4 radical reviews - radicals are now guru’d unlocking the last few kanji. Do all the kanji lessons immediately.
Monday 10pm: kanji apprentice 1 reviews
Tuesday 6am: kanji apprentice 2 reviews
Wednesday 6am: kanji apprentice 3 reviews
Friday 6am: kanji apprentice 4 reivews - level up and repeat the cycle.
That’s roughly the schedule I followed for a while. As you can see, it’s not so hard. You just have to understand how the intervals work.