Try to focus on their respective sounds on this night. It is still not crucial to know exactly which is which, but this might very well be your only really good opportunity to try and relax and focus, instead of fearing for your life the whole time.
Foxy enters the room from either side door behind your back, and you will catch a glimpse of the closet opening and closing very briefly. Foxy has four stages: The initial jumpscare and head out of the closet, head retracted back into the closet, standing up with only the hook hand in view, and the sweet, innocent plushie phase.
Actively listen for Bonnie, Chica, and the Little Freddy’s on the bed while dealing with Foxy. Foxy’s plushie and hook phases are both considered safe, with either phase afterwards being danger zones, which puts your life at risk of an attack.
Actively keep Bonnie and Chica away if they are heard. There is no need to keep checking for them when you know what sounds they make, which could waste precious time and lead to an attack. If either of them are heard walking down the hallway, take action to ward them off and return to the center of the room immediately afterwards. 6AM won’t come around so quickly on this night.