Iphone13 battery Drain

I am having an Iphone 13. Since the day I have upgraded to the latest version of ios 17.5.1 my phone's battery is draining like ****. I have to charge my phone twice in a day even after my battery health is 85%. I am pretty skeptical that whether this issue will be addressed by Apple or should I take it that it is a strategy adopted by apple to force it's customer to upgrade to new Iphone.