Well, I'm not a fortune teller or an expert, but I think there's nothing wrong with dad and his daughter spending their birthdays together, and there's nothing taboo. If you believe, nothing, as long as you are happy. But I wonder, after your daughter gets married, will she come to help her father celebrate his birthday or take you to her place? She will definitely come to celebrate her father's birthday, but she will get married later.
I hope it helps.