Try not to stay in the cameras for too long, Keep it on Foxy's cam and look at her for a while (I did 3 seconds on checking her). Bonnie and Chica when they get to the door listen until they finish their sound cue which is 3 footsteps and after that wait for like 2-3 seconds and flash the light and close the door. After this they should leave in literally 1 second if you do it right. Then for freddy listen for her laugh. She will laugh 5 times in one night and then she'll be at near your door she only attacks at 5am though at random so close the right door when she's in her last phase.
AI needs adjusting but it really is just too hard to play