There are also other decks to consider tackling. IIRC, this WK Expansion Pack was targeting common words that aren’t taught on WK, but use the same kanji. I think the discussion on Kitsun goes into more detail, but the decks should otherwise be the same.
I want to say there’s a relatively easy way to do the comparison, but I don’t use Anki. As much as I dislike Anki, I have to admit that the platform has great support from its community and I’d be surprised if there wasn’t a plugin that could do the job with a bit of work (eg. exporting a csv from somewhere). I know Kitsun, JPDB, and even Bunpro all have ways to mark WK vocab either through an API key or some word list trickery. As for the comparisons themselves they should be dictionary forms of words or similar rather than the English edict style definitions being used. Comparing by the English is begging for trouble.
Whatever you do, I’d still recommend finding a way to put another SRS into your schedule… when you can. WK level 3 only goes so far, but one of the problems with WK is that it has no meaningful endgame. At some point you’ll finish it and need another platform to study new words or kanji in a similar fashion.