You guys know how to do 4/20 in fuzboob?

Seems like the game's AI is far different from the mobile ver. At twenty, all animatronic furries can ignore the "only attack when cams are on except foxy" rule and attack me directly. Cam flicking doesn't seem to be as effective at twenty, both freddy and foxy need to be at full cam to be stalled. I can only go to 5 am at max, I always need to be in a blackout state. Don't know how to conserve further power. Any strats?