I’m the same. I wanna tell you something that other comments might be missing. Is this your actual priority? Like, is learning Japanese your #1 goal?
Because for me, it used to be #1 (or one of the top) goal up to ~level 15. Until then, it took me like 2 weeks to level up, iirc.
Then I started studying university, realized I’m interested in learning coding, working on my body, reading philosophy, studying math, cybersecurity etc. Now my levels take around 3 months. I’m aware of it, I just don’t prioritize it.
So, what I’m saying is, if your levels take so long, probably WaniKani isn’t a priority for you, or you lack discipline / focus. If it’s not a priority, that doesn’t necessarily mean a bad thing, maybe you’re just not aware of other things in your life that take up a lot of time and are more important for you. If it’s the discipline or focus, well then you gotta do something about it, first step is being honest to yourself…