How many hours of Japanese deep are you? You marked the other updates but not this one? And thank you for sharing this video, it's interesting.
I stopped tracking my time after the 2nd video because after 2 years I started to get annoyed doing it. I'd say I still do 2-4 hours a day but now I have some days where I don't do any Japanese if i have other stuff to do. I'd guess between 3500-4000 hours total