As someone who beat 20/4, I'd say you do NOT want to ignore foxy's attention needs as she is going to eat your power by killing the door, I play by the 6/3 rule. (6 seconds outside cams/3 seconds watching foxy) That way, she will really only run 3 times per run, which in turn will not eat away your energy. When it's 5 am, you should ignore foxy and put the cam on cam6 so freddy can't attack you, then hope for the best after you lose power.
Freddy moves every time she laughs, she can only attack you when she's at Cam 6. To avoid her when she's near you, you either put the cam on her(you don't have to be looking into cams, just put the cams on cam6.) Or close your right door and wait till she slams the door and leaves somewhere else.
