Potty training?

How do you go about teaching? I know we aren’t “supposed” to teach until they are 2. But I feel like Ella is ready, she pulls on the diaper every time it’s dirty. And sits on her toilet, but can’t get the “pee” to come out. Lol if that makes sense, she’ll sit and wait and wait for like 10 mins but she gets frustrated. By the time I realize she’s already peed. I am doing where she’s only wearing underwear and she can pull them off and on. What are you girls doing?