I'd be concerned that giving rewards for reading might backfire; I've been impressed by the research showing that offering people a reward for doing something makes them less likely to do it voluntarily than they would have been if you had never offered a reward. Two things we did might be relevant (or might not; he was younger, and he was never reluctant to read):
- DS's reading books were only for him to read. Nobody ever read one to him.
- Reading to himself was the one thing he was allowed to do after bedtime, other than go to sleep!
