DS is nearly 7 and has always been quite advanced with his reading skills (behind on writing but ahead on reading so it all levels out ) I usually sit down with him and he reads out loud to me but sometimes, if I am trying to get 3 year old DD to bed etc, I will ask him to start reading by himself. When I go in to him, maybe 5 minutes later, he will try and tell me he is now on page 43, having been on page 3 when I left the room!! When I then ask questions about what has happened in the story he just guesses an answer. When I question him about the fact this he's lying he either denies it or just goes all sheepish and said he didn't mean to lie. These are books that he has chosen to 'read' by the way, not books that I am trying to force on him.
Any ideas plesae for how, if at all, I should handle this?
TIA