K.B.
It sounds like you are on the right track, and I'm sure your experience helps. I used the Bob Books with my son and they are a good first step. They have two or three sets of 12 books each. Once you get through those, I would say move on to easy readers aligned to his interest. For example, we have Hotwheels phonics books and level 1 books. There is also a series of books called Henry and Mudge that are easy readers but a little more advanced. Good luck!