Awesome guide just got it today, the button config is doable since there is an A-B visible in the options menu
The only thing I had to find out was how to quit out during the game to load another savefile.
Press X to bring up the menu during game and select the one with a symbol looking like 3 at the end る
That means quit, press it with A and select the left option for Yes
You will then be taking back to the main menu to load up another savefile without dashboarding.