DS would not touch chapter books at 4 years old because he was scared of too many words in one page and the black and white format. But, he had moved on from picture books. So, I got him the kindle app on iPad and downloaded the book series that he was crazy about and was asking me to read to him - I also taught him to zoom in on the words so that the font size increased and the number of lines per page were so few to not be intimidating. This worked like a charm - he read a book per day on his iPad kindle app. I switched him to paper print books from the same series after some weeks and he was able to handle it. I think that this approach is worth a try. Good luck.
