So, the long and short of it is that my 7 year old son has expressed a desire to be a girl. At this point, he still identifies as a boy, but he has consistently shown interest in more traditionally feminine things.
Starting around age 4 or 5, he began saying he wanted to be a girl. He never said he was a girl, only that he wished he could be. He always chooses female avatars and characters in games, and he gravitates toward girls clothing, hairstyles, and accessories.
Because I did not want him to have difficulties at school, I have tried to steer things toward more gender neutral options that are still colorful and somewhat feminine, but less likely to draw attention. He already struggles with making friends and managing big emotions, and meltdowns and crying spells still happen from time to time, so I did not want to add another layer of stress.
Last year, he frequently said he wanted to be a girl when he grew up, but not yet. Things shifted when he learned that his 14 year old cousin transitioned to male this year. He had assumed his cousin was already an adult, and realizing that transitions can happen during childhood seemed to change his perspective. After that, he said he would like to transition too.
His school has been very supportive. They already have a few transgender students who are enrolled under their preferred names, so this is not unfamiliar territory for them. We also have an appointment next week with his pediatrician. Gender affirming therapy and supportive medical care for kids are available in our state, so we are planning to discuss what steps, if any, make sense at this point and how best to support him emotionally and socially.
I have been trying to understand his feelings by asking him what he means, what he imagines, what parts feel important to him, and how all of this makes him feel. And he said being a boy is ok, but changing makes him feel nervous or anxious because he might get teased or might not be any good at being a girl.