What I’ve used in my Japanese learning journey so far:
(my crude attempt at using a table as a timeline)
|6 months||9||9||6||1 year||1|
|Human Japanese||Human JP 2||Lang-8||Wanikani||Wanikani||Wanikani|
|Write characters||Write characters||Inflluent (steam)||Study abroad||Old JLPT N2 tests|
(*) Used these textbooks and/or workbooks in a college course
This doesn’t count playing some video games (pokemon, stardew valley) in Japanese, looking up random words I think of in English, looking up words I hear on TV shows, reading any sign/poster I saw in Japan and looking up the kanji, looking up grammar points I don’t understand, etc.
I think I’ve progressed tremendous amounts through each section I have above so hopefully this will be helpful to you or someone.