HS Lang Arts Qustions/Advice

I could use a little help deciding how to proceed with my 9th grader. He is my oldest and we have been using CM methods for 5 or 6 years, though in the beginning we transitioned pretty slowly. He is still pencil phobic, does not embrace literature, hates to read and is a very poor narrator. Naturally I blamed myself for this, I assumed I was doing CM “wrong”. I am confident the methods work but I figured I must have somehow screwed it all up. Recently however I realized that my two younger students (7th and 4th) are thriving. They both narrate quite well and write stories for fun. I can even see them both mimicking the style of whatever author we are reading. So I am not sure why it is different for him, other than he is just different and will never embrace learning in the same way. So I need help with how to proceed with language arts. Currently we are using IEW and Easy Grammar. It is going ok, IEW seems to be helping him organize his ideas. When he finishes IEW/Easy Grammar I was going to proceed with ULW 3 and Beyond the Book report. He finished most of ULW2 last year. He will be in 10th grade though. I thought ULW would help cement/apply the concepts he learned in Easy Grammar, and Beyond the BR would give him more writing tools that werent so formulaic. Is 10th grade just too old for ULW and BTBR? Or would the slow steady practice be ok for a kid who really hates to write and will probably never pursue a career requiring much writing. Any ideas would be appreciated. My fear is he will never be able to put his thoughts into writing. IEW helps him rewrite other peoples thoughts, and even tell back in his own words, but so far there is no putting his own ideas on paper. In all honesty he has a hard time with any deep analysis, maybe it is just maturity, but I would like to help him if I can. I know this is long so thanks for taking the time to read it.