Battery Health

Degrading to 88% in 10 months is kinda fast, I bought an iPhone 11 in March and its battery life is still preserved at 97%, albeit using and charging it every day.

To optimize your battery life and prevent fast degradation, see these links: https://www.apple.com/batteries/maximizing-performance/, https://support.apple.com/en-us/HT208387, https://support.apple.com/en-us/HT210512, https://support.apple.com/en-us/HT205234.

Hope this helps!

Apple recommends once it drops to or below 82%

I’m not quite sure I understand. You may have to rephrase this do get replies.