As title said above, I’m have difficulties remembering single kanji (not word) instead when they in compound (jukugo). When in compound shape (jukugo), I can recall information fairly fast and read easily. But when starring single kanji, I’m blank.
Example. I’m starring at this kanji, and I can’t summon my memories back. Even I’m already learning this kanji.
But when they paired with another kanji/okurigana followed, I can read recall fast and easily remember how is read.
Except for some words which actually one word kanji which I’m focusing and remembering in mind like (堺、趣、礎) they still retained well. But yeah sometimes I’m forget how to read their onyomi unless paired with another kanji/okurigana followed like case above.
I’m might not used Wanikani, but I’m open my ear for some advice because I think Wanikani user learn kanji by systematic and probably have some better way/technique to tackle this compared with my unmethodical learning.