Below is my current progress
As I was taking a break for more than a year, it took me 2 years to complete level 4 (i have reached level 30 or something previously, but I asked to be reset to 0), so the average level duration is currently at 160 days. Haha.
I don’t mind, as I know my own progress and I know my own limit. Even during new lessons, I would accept learning vocab first rather than new radicals or kanjis (which will quicken my level, but may not accelerate my learning process)