“What’s ‘Air Conditioning’?”
If that’s the case, it’s almost a free-bee. Just do a few small things during those peak times, like unplugging the laptop, not running the dryer (if electric) or washer (if the water heater is electric), etc.
If you have electric heat in the winter, you’ll want to crank it up before 2 PM, and then kill it for the 5 hours, which should be survivable.
And crank the air a hard a few hours before 2 pm.