Battery Health Drain 1% every 10 days

My AppleCare is about to expire (a week) and I am experiencing 1% battery health decrease every 10 days or so. I use my iPhone 14 pro max lightly, and usually full charge it every 2 days. Followed all the tips that Apple recommends to maintain battery health, all of them did not work. Went to Apple store to get it fixed, but I have to pay out out pocket because it is now 94% and not eligible for AppleCare coverage that is supposed to be 79% or less. Suggestions would be appreciated on what should I do to get the battery replaced with my coverage. thank you

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Battery Health Drain 1% every 10 days
 
 
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