I totally feel this pain as well. A colleague of mine got me into learning from a more disciplined approach, which is how I even found WK in the first place!
When I unlock new words, I try to spend a good 5-10 mins with each of them, going through its kun and on readings, and then grabbing a word from the vocabulary that has the kanji reading that I’ll need to input for the review. It adds more knowledge and kick starts the vocab process. Maybe try giving that a go?
Also, don’t be afraid to fail. Forgetting is part of learning. As someone who stopped learning Japanese for 15 years, it’s actually stored there in chunks, and interestingly, I’ve remembered the readings for kanji I haven’t seen in the 15 years. It takes time to compact this amount of information into your brain.
So TL;DR be patient, forgive yourself, and don’t be scared to fail! Not starting lessons for fear of getting the kanji wrong hurts more than failing the reading the first couple of times