But remember, he can break through doors, so slowing him down in the final hours of the night is key.
Watching him seems to make him advance slower, so keep an eye on him and remember he typically moves throughout the whole camera circuit before attacking. This is a good indication Freddy is lurking. Freddy is harder to predict and frequently makes cameras go dark.
Here's how I've found all four enemies to move throughout the night, with the exception of night five, where it appears all bets are off. Learning early on how they move will get you further, and faster.