This brings back memories! At 3, our DS began writing for 5 hours a day until he felt that he had learned how to write. Now he spends a few hours a day making books, doing math and drawing-it's awesome! I get to enjoy it and not be the on-demand scribe. I know this stage feels like you are just scrambling to give them a way to match his cognitive skills with the much younger fine motor but soon it will begin to mesh and it's really special to see them finally express themselves.