You may well be doing all that you can in that case. Domestic properties are not easy places to reduce energy consumption. I’d say just minimise washing machine use, check your refrigerator/freezer door (check seals, turn the thermostat as high as you dare, gas charge and wipe condenser coil), ensure good light switch discipline.
I quite like edukators idea of limiting electrical supplies.
I also think that only “A” rated (or better) appliances should be allowed on the market.