Thank you for calling Apple support! It saves the rest of us from doing that.
My temporary relief from battery drain by turning off the double click only lasted for about 24 hours. I’m back to full drain.
Mine started with 14.6 and sharing my Apple Card with my family. I initiated the Apple Card sharing from my phone. All of my family is on 14.6. Only one of those phone has issues with battery drain. And it happens to be the only one who has used the card. But that battery drain is only 10% for using it 1 minute.
I tried turning off location for the wallet. No help. Every time I try something new I power off the phone all the way, wait 30 seconds and power it on again.
Nothing has helped so far. I do not have an Apple Watch.