I know its kinda useless info now but its in my opinion easier to just count the laughs from freddy. Just count to five and on her 5th laugh close the door and then open or close it on every laugh from that point. I found it way easier since it saves a tiny bit of power and it also doesnt mess you up if you accidentaly misclick when going back to cam 1C. But ig thats useless info for you now lmao