I use this strategy for Night 3, FNaF2, and it works quite well, except I'm just not good enough to do it well.

1. Flash hallway. If Foxy's there, flash, quickly wind up the music box a little and repeat.

2. Check left vent light. If someone's there, put on the Freddy head.

3. Check right vent light. If someone's there, put on the Freddy head.

4. Flash hallway.

5. Wind up music box.

6. Once Bonnie first appears in the hallway, check both vents on camera after Step 5 and put the Freddy head on every time the monitor is flipped down, this goes until 6am.

7. Repeat

Is it alright? I'm on mobile, by the way.