iPhone 14pro battery problems

I have recently done the latest update on my iPhone 14 Pro, it is 1.5 years old, I think the update has helped the biggest problem I was having but my battery health has dropped massively. Before this update I had this problem where I would charge my phone before I went to bed and then I would set my alarm for the morning, but then my alarm wouldn’t go off as my phone had dumped all of its battery in the night. I would make sure that all apps and windows were closed but it would still dump all my the battery sometimes, other days I would wake up in the morning and the battery would still be nearly full , this seems to have stopped since the update but now my battery health has gone from 93% before the update and now a couple of weeks later it’s on 88%. This is quite ridiculous that a phone that is only a year and a half old has lost so much battery health. Will Apple do anything about how quickly the battery is deteriorating.