Me too. And I have an iPhone 12 Pro 6 month old.
today my battery health went from 96% to 95%
I sent it to assistance last week, but Apple tech did not found anything wrong with my battery.
before iOS 14.5 I could do 12/14 hours without charging. At 10 pm it was at 40%
now after 14.5, 14.5.1 and 14.6 at 3 pm it is at 40% and I have to charge it!!!
not happy at all with this situation and how eu Apple tech in Czech Republic treat my case.
it is not normal that a 6 month old (1000 € and plus) phone can only make 7 hours o. Battery.
I traded in my 2 years old XR and battery health was at 98% and I did almost 12 hours on battery with a more than 2 years old phone.
never been so unhappy with Apple like I am right now!!!!!!