Have you played around with something like Remembering the Kanji approach for learning kanji? I’ve had ups and downs with the approach but currently trying out a variation of https://youtu.be/SUVHMEUld4I?si=cogmsv8PE3S-2EHb tailored to Japanese in order to learn one onyomi pronunciation for each kanji I learn and to create a more predictable structure for stories I create to learn how to write the kanji.