I have been finishing on average on 7-8 days, but this speed is mainly because of former knowledge. Now in death levels, there are a lot of kanji I’m not familiar with, so I’ll probably go slower this time, but I hope to keep my streak.
I used to read them in earlier levels, but some sentences are just so weird or contains some kanji/vocabs I don’t know so I skipped it all throughout. (I don’t really know it this is a good thing or not) I just make it up by reading manga in book clubs, and by using iKnow.
I do my WK review in 3 batches during busy days – during breakfast, lunch and dinner times. I time my lessons as much as possible by 7-9 am, so that most of reviews will appear during awake time. During idle days, I do all my reviews as soon as they show up, except when I’m sleeping. I personally find it enjoyable, despite the influx of reviews sometimes (I sometimes wake up with 150 reviews on my plate, and I’ll just sigh, skip my breakfast all together, and tap away in my phone). My personal goal is to be able to read smoothly as how I can read English with ease.
I don’t use reorder script, since it feels like cheating (in my own opinion). I like to level up mainly because I’ll learn new vocab and not because I’d like to race (and since I pay monthly, its more efficient). Personally, going the slower way feels like detrimental to my way of thinking as well. How people learn and retain knowledge is different, so I don’t think you need to be pressured with us doing level-ups in a week.