It is never to early to help a struggling writer explore technology. Allowing the child to use technology will not make them want to write less. It will encourage them to develop important underlying skills. Writing is more than putting marks on the paper.
It involves the ability to form ideas, to spell, to remember the rules of grammar, knowledge of letter formation and then still remember what you were writing about. Allowing the child to use technology will allow the child to show the world what he is thinking. Balance is always the key