Encouraging writing

I can’t believe I’m asking this, since I love to write. Ds8 (almost 9) does not. It’s all I can do to get him to do one line of copywork. There may be motor skills issues involved; I don’t know. Anyway, I know CM didn’t advocate written narrations until later, which is my excuse (reason?) for not  pushing it. However, some of his 4H work will involve being able to put his thoughts on paper, handwritten, not typed. Any ideas on how to encourage him to do this?