If you’re stuck on a reading, it is simple to overcome. Don’t rely on only one input method, utilise all your input sensory, such as get a book and every night and morning just right the word and the reading your struggling with 5 times, within 3 days you will never forget. To apply this technique properly you must also say the word and reading whilst you write and dont just say it five times, say it over and over as you write it.
Write the english word as you already know that meaning, whilst writing it dont think of the english word just say the reading many times. Then write the reading and this time, dont think of the reading keep saying the Japanese word or meaning in the case of kanji in full many times. Say it out loud as you then hear what it sounds like. Thus using more of your sensory than just reading, it’s amazing how much you will retain when you start writing, speaking, reading and listening all at the same time, use your brain, dont trick it into memorising just let it happen with this method.
I hope the explanation is clear enough to follow…Write, read, speak, listen.
Only focus on one reading per kanji, as you will learn more readings within the words.