Avoid running the AC all night

Of course I have insulation in the attic.  I also have blackout curtains over the window and most of the outside wall.  Blackout curtains are generally a bit thicker and heavier and act as insulation.    I run the AC till the bedroom has cooled down.  When I go to bed I switch off the AC and turn on an overhead fan.  The room remains cool till after I get up in the morning

Sakon Nakhon