Both of my kids were sort of like this. Second D, who is 2E, especially... she was slow starting to read, really just getting the hang of it first semester of 1st grade. Her first grade teacher was concerned that she was not a better reader given her very large vocabulary. But when she got going, it was like a rocket taking off. By fall of 2nd grade year, she was reading the full three volume trilogy of Lord of the Rings. She is headed for college this fall, and I have watched that type of lag -- then blazing progress again and again over the years. Have come to expect it.
Not sure if it is part of being 2E or just her personality (once she decides to do something, it is OVER -- but until then she just dawdles along).
