Plz help .. don’t know what is this

Tela • Happily married April 2016 & in love with our girls 👧🏻 👧🏻👶🏻April 2017 & September 2019 & August 2024

So I’m noticing this rash on my toddler. It’s getting worse. I made an appointment to her doctor. But still I’m concerned 😟