how do i prevent people from activating promt blocks multble times before the output happens?

im trying to make an elevator which can be "called" using pront blocks (ur not really calling an elevator its just a timer atached to a door) but i want to make it so you cant press the button again untill you enter the elevator and go to a different floor (inside the elevator theres 2 different pront blocks which you can use to choose the floor ur gonna go too)

i tried using a simple setup where a move block will cover up the pront block untill all of this is finished to provent you from being able to press it more then once. i did this by simply using a light block with flip enabled. problem is.. it seems that move blocks + light blocks dont work right. the light blocks seem to not send the output correctly causing the move block to instead of moving fast, it just slowly teleports to where it needs to be. does anyone got a possible fix?