I get what you mean, but I disagree. As a teen, I thought I had an obligation to come out to everyone, and make a whole big announcement. It was a huge relief to hear that actually, I don’t owe anyone information that would be exhausting to share and could make my life harder. It was my choice, and no one else’s, and there was no timeline I had to follow.
That’s fair. Are you in a place where everybody knows each other? If your parents aren’t really likely to hear it from anywhere else, you can also come out to other people, like at school or in your social circles, without necessarily having to come out to your family.