''I tried feeding him his favorite snack.
I’ve tried talking to him,” you held up your hand and put a different finger down as you went down your list.
“You see, my dear sweet boyfriend has been so engrossed in his music making today that he’s forgotten I exist. Make sure that you have audio, and that you know how the word/phrase sounds, and the pronunciation. Also, you could write them down, and keep testing yourself on them until you have them memorised (both target language to english, and english to target language). You could also play around with apps like Duolingo or Lingodeer. First, you could use flashcards, like anki, memrise and Quizlet. You can then start learning vocabulary for your interests specifically. You can do this using multiple methods. It’s a lot, but it will give you a strong foundation.
Try memorising a few of them. In terms of what exactly you should learn vocab for, I would recommend learning vocab lists for these: numbers, subject pronouns, common greetings, the most common verbs (the first 100 should do) and their most common conjugations, days of the week, months, seasons, years, how to tell the time, how to talk about the weather, family, colours, house vocab, food, money and shopping phrases, common adjectives, common places, adverbs, parts of the body and medical vocabulary (I got all of this from this post). There are loads of articles online that have basic vocabulary lists and phrases in different languages (there are even some on this website). Memorise some basic vocabulary and phrases.