You can’t hurt a child by allowing them to explore their gender
Children should be allowed to explore their world and their bodies with the freedom that perhaps only childhood allows. If your child wants to experiment with clothes, makeup, names, hairstyles, pronouns (he/she/they), this will not force them towards any type of gender identity. Let them explore in a safe environment and their passage through their teenage years will be more comfortable.
Do as I say, not as I do.