How do you go mostly uphill? Does someone else drive your car back home?
I'm getting a little less than 2Wh/mile extra per 100lbs with the Crr at .008 and drivetrain efficiency in the high 80s from the site calculator.
Aerodynamic & rolling resistance, power & MPG calculator - EcoModder.com
Those are the real efficiency figures for the Model 3. They're from Tesla's EPA application. The only big efficiency hit I've seen for a Tesla is getting on the pedal from a stop a lot because they use the rear brakes to emulate an LSD, which drops efficiency by ~30-40+%.