Well, I can’t actually answer your question because my daughter hasn’t narrated from a picture book, though I think it’s a good idea. But I wanted to comment on your reading time frame. I’m not sure about others, but we started with about 2 – 3 minutes of reading before narrating, or sometimes even shorter. In a chapter book, about a paragraph or two. Anything longer would have been too difficult for my daughter. I’ll be interested to read other comments.