Let me start by saying this conversation was between a twenty something, a thirty something and myself 50s).
Apparently, I’m very wrong.
I think you should put the proper name on the birth certificate so the child can have a choice when they are older.
Lottie might suit your five year old but might not fit Charlotte when they are thirty.
I’m told that’s what they put on the birth certificate is their name and that’s what it’ll always be.
If they don’t like it they can just change names.