In cases like this, I start a new save to reacquaint myself with the controls, then go back to my master save once I’m comfortable with the controls again.I got a digital pre-order so the clock is slowly ticking... Must admit I'll have to take a look at those stances and stuff again because picking up those controls again will take some effort.
Had the same with the FF7R DLC, playing with maxed characters with all abilities and skills when you don't even remember what the square and triangle buttons do, is kinda hard...