How do you count the months?

Chelsea • Justin Tyler 9/1/18💚Miana Marie 12/14/2020💜 Zebedee James 11/1/2024🌈

My daughter is 8 weeks tomorrow. I can’t decide if that’s 2 months or if I should count 2 months on the 14th since she was born on the 14th? My son was born on the 1st so it was always super easy to determine his months idk why this is throwing me off 😅😅

Picture bc she’s just so cute🥰