My iPhone 12 pro went from 100% to 93% in two month is it normal

Quite normal and very good for an iPhone 12 which is 3 years old. Battery Health is an inexact figure that varies with usage. The typical Apple Battery lasts 2 years with normal usage. When it reaches 80%, it will be time to make an appointment at the nearest Apple Store for Battery Replacement.

Batteries - Maximizing Performance - Apple