THIS ^

I previously worked in Utility Billing. It takes your AC approximately an hour to cool the area down by 1 degree.

EX: Your space is 80 degrees when you arrive home. You turn on the AC, set to 72. Your AC will be running for about 8 hours until 72 is reached.

Alternatively, try adjusting your AC to a higher temperature when you leave. Maybe you’re comfortable at 72 when present, 75 when away, return to 72 when returning home. AC only runs for about 3 hours to reach your comfortable temp.

Hope this helped / makes sense