I thought the art and music were lovely. I think the game would really benefit from a tutorial instead of an info dump at the start, otherwise its great!
Balance is real difficult. Theres probably an infinity of ways of doing it effectively. The first in my mind would be to freeze time during the game to show the button prompts.
Thank you for thinking this together! It is in fact a way I thought of early on but thought of the possibility where you would go gameover as you would reach to the "help" tab and freeze the game. I also thought it would interrupt the pace of the game.