We have one of those too and he will do it intermittently but this isn't so much about not practicing the letters for themselves but not doing the other stuff which include writing, like drawing or notes or stuff that he could be doing.and seems to want to do! He has never been that kid to sit down and write. Like earlier he was willing to sit with me and we drew spell bottles and wrote the labels for his crazy magic spells. Interesting side note, he is getting to be a pretty good speller without any formalized emphasis on it or much writing. But I don't know how to encourage him to think to do it Or color independently, he just seems to dismiss it as an avenue of fun for him to do, but loves it when others do it
DeHe