Switch to new fixture
With a new faucet saves water and makes perfect temperature once you turn.
Most new mixers have built-in flow limiter and is therefore water saving in itself. The fixture should be easy to operate, so you quickly with one hand can regulate the pressure in the jet.
Find the temperature with the same
Also choose a faucet where you can set the right temperature on the thermostat immediately turning on the water. To avoid wasting water while balancing procedures temperature. For every minute shower or faucet runs use up to 12 gallons of water.