Same as a friend who’s looking ripped after working out consistently, how can you tell you’ve been getting those Japanese reps for your Japanese muscle?
To me one of the biggest improvements I saw after the first few months of Bunpro was a great increase in my reading speed, and also a sense of all consuming darkness coming from realizing how hard this language actually is achievement and progress!
If that’s not a testament to 368 days on Bunpro, I’m not sure what is!

At my previous job they always pointed out how I was doing the “japanese thing I’m always doing” before starting my shift/during breaks. There was also some WaniKani in there.