Make it so once you reach a high enough level or rank, you don’t have to manually press the breathing button anymore and breathing just happens automatically.
You shouldn't start with this at the beginning though. It should be something you unlock later on, after grinding or hitting a certain point. It needs to feel earned, not just given for free.
A cool way to unlock??:
Boss Fight Unlock
Beat a boss while manually filling your breathing the whole fight. If you complete the fight without running out of breath, you earn Total Concentration Breathing.
(Have to have a certain level and rank and amount of demon kills to attempt)