Battery health concern with minimal cycle count increase on iPad Pro M2

I see no issues.

Capacity is an inexact and non-linear value. It is based on an average initial capacity of all batteries of that model All manufactured items are all subject to small manufacturing variations within an allowable design tolerance. It is not based on your batteriy's actual capacity.

And you know what "average" means"

Also, capacity is so inexact that any reporting app that reports it to two decimal points is smoking some seriously bad stuff.

Please do not obsess over your battery. Develop a uniform charging pattern, and don't routinely let it drain to zero. Ms AJ has an iPad 7 Gen bought in 2020. Its original battery now has over 1600 cycles yet it still about the 83-5% mark and gives useable runtime between charges.