If you follow these steps your battery health would last for a longer period
*Try to use Low Power mode in normal day to day use.
*Always use genuine Apple charger and apple lightning cable.
*Avoid using power banks for charging, charge only with apple genuine charger.
*Avoid charging your smartphone with car Charger instead use apple wired car play on the go.
*Avoid using wireless charging pad, as it heats up the phone results in battery ageing.
*Switch on Optimise battery Charging.
*Try to use dark black wallpaper as your phone comes with amoled Screen, it would consume less battery.
*Do not let battery percentage fall below 40%
*Also do not let battery charge above 80%.
*Switch off location services(GPS) when maps not in use.
*Disable Baground App Refresh.
*Reset your smartphone once in 6-7 months.
*Always update your smartphone to latest software.
if you follow these steps i hope your battery health would not deplete.
(also i would bring this to notice that, majority of the customers are facing battery health drop after updating to ios 17)