I use my macbook Air m1 to run camera software and every time the dispaly goes off, it's asleep so it has to find the camera stream which takes a few seconds. on my old mac the display could be off, but the macbook was still awake. after an hour it would go to sleep. I can select prevent computer from sleeping automatically when the display is off. but this means the mac will never sleep? I'd like it to sleep after a set period of no user input like the old one. Is that possible?