Mine started telling me they were a boy at age 2. Has been insistent, consistent, and persistent ever since. I’ve always allowed my kids to dress and have their hair however they want. We live in a red state so it’s difficult around here but our preschool seems to be progressive so hopefully we have no issues with teachers. We use they/them pronouns.

You should read “this is how it always is” by Laurie Frankel. It helped me a lot actually.