hi! yeah, even total beginners complain about the slow speed of the first levels, so i can only imagine how boring it must be in your case but i’m afraid there’s no way around just having patience.
have wanikani on the backburner the next few weeks, lessons+reviews should be easy enough anyways and focus meanwhile on something else (grammar, speaking, listening, textbooks, what-have-you). you can use a userscript to reorder lesson items and level up a bit faster / more efficiently by learning radicals first (see here) and maybe look at other useful scripts as well (userscript masterpost with explanation).
good luck and i hope you can still profit form wanikani 