I learned about conserving water while living in the Caribbean with only the water from the sky collecting in a rain barrel or if lucky, the cistern would be half full. Turn on the shower, get wet, turn it off, soap up everything, rinse, do not repeat.
Flush only when necessary.
One pan of dishwater for the whole day, then water the plants at the end of the night.
its totally doable and amazing amount of water can be saved.