Yeah, this was exactly the case for me. I was even worrying that I’d never get past the point where I could read sample sentences but anything beyond that seemed perpetually beyond me.
Opinions vary greatly on this, but I think that personally it’s best not to worry too much about leeches.
In the same time it’d take you to learn one leech you’d probably be able to learn 10 or even 100 words that do stick, and since you’re never going to learn all of the words in Japanese anyway, you’re basically sacrificing all those other words for the sake of only one.
And if that one word is really that important, it’s probably also pretty common, meaning you’re likely just gonna learn it through immersion eventually anyway.
I’m not 100% following this myself, and you may not agree, but still, just throwing the idea out there
I can really relate to this tricking the brain. I’ve found myself watching Japanese let’s play videos for fun while thinking “damn, I really need to stop procrastinating and do my studies today!”… That’s how you know you’ve got your brain fooled!