To me, whatever benefit you’re getting from Anki is not worth spending 6h a day on it. Even one hour is excessive.
I like Kanji/Hanzi. I use Skritter to practice writing (when I feel like it, usually not everyday). I was going to take Chinese calligraphy classes in the nearest Confucius Institute, but 2020 happened.
Back when I started a lot of people on the internet said THE way to start learning Japanese was to do Heisig. I did the whole volume 1 in 3 months (had a lot of free time). If I were to start again I wouldn’t do it this way. You don’t really need to know thousands of kanji upfront.
Anyway, my intention is not to say how you should study but to give another perspective. You started the thread asking for help so you already feel your anki use is getting excessive. 6h of anki a day would be absolutely soul-crushing to me. I can’t even take 1h these days, because I know there are far more interesting and fun things to do with this time and yeah, maybe it will be less efficient than using anki for longer but I’m not on a race or contest, I don’t need to be 110% efficient. Fun >>>> efficiency.