I am not sure if this is a concern or not. If I ask my DC to tell me all they know about a topic, they will jump around the story quite a bit. For example, they were narrating about Joseph. First they mentioned the coat, then they mentioned being sold into slavery and endiing up at the prison, then they mentioned the dreams he had of his brothers (before being sold). Is this okay or should we work on things being in the right sequence?
You might encourage your children to draw while you read. Fold a piece of paper in half, then half again until when you unfold you have 4 (or more if needed) “frames”. While you read they draw quick stick figure drawings, maybe write a word or name or two in each box. Then when you ask them to narrate they have their own visual to help them stay on track.