I wanted to share some thoughts with you before you embark on learning the right hand of the accordion.
I'm assuming that you are using this website, piano books, accordion books, a piano teacher, or a combination of all of them. There is no shortage of material for learning the piano / piano accordion.
Take your time. Learn a little bit at a time. Like any skill that's part physical and part mental, give your body time to digest these lessons. As you learn a new right-hand skill (finger movement) try it with a song you are learning, or an ear-training exercise.
Most importantly, enjoy!