My iphone 11 battery drains faster after ios 17.2.1 update.

My iphone’s (iphone 11) battery health is 93% but after the 17.2.1 update the battery started draining rapidly. I lightly use my phone just for calls or instagram or facebook. I could say it loses a battery percentage in every 2-5 minutes sometimes 1 minute each. Before the update it lasted longer now it drops 14-18 charge overnight. Please tell me how can i save bettery life (not by cutting of haptics or other functions) if this is a bug should i downgrade to ios 17.2?