>>72502554it took me years to get functional in my spare time, but once i had the foundation progress was fast. 90% of language learning is subconscious, just keep doing your reps and practicing the 4 skills: listening/speaking and reading/writing(writing kanji optional after you have the basics but still great practice)
try to spend at least 5-10 minutes a day on one pair, and don't study either pair in isolation.
you need the listening and the sounds to properly match with the readings and the text in your mind to really form links. Even if it's just practicing hiragana and singing along to music or shadowing a podcast, practice is practice!