If you want to know how to optimize, here’s the guide that gets mentioned most of the time for that.
Many people have written guides on how to optimize WaniKani, so you should search the forums for more advice. Others have written guides on why not to. I’d not kill yourself over it and burn out, myself. Even with WK’s schedule seeming slow at first, you can overwhelm yourself easily if you’re not careful. So be warned.
Good luck!