HI Sarah.
Actually, we have gotten off the lessons for a while because his reading really improved and he is enjoying reading age appropriate chapter books now.
I will ask him if he will do a few more lessons with me to test his skills and interest.  I think he feels confident reading the big kid books now and when he reads aloud to me or my wife he is much more advanced than he was 4-6 months ago.
Will keep you posted.