Hi Jolene,
Our DD8 has also been (tentatively) diagnosed with ADD/inattentive type along with a bunch of other stuff. We're still trying to figure it out, but I just wanted to offer the following, which is that perhaps you could just try medication to see if it helps and if everyone isn't happy, stop. I have a coworker whose son is in 9th grade and has been diagnosed with ADD/in. and who is taking Concerta as of earlier this year. My coworker says it really helps him focus so that now he can sit down and read a book whereas before this was difficult, and he actually likes the effect of the medication and asks where the pills are if he can't find them so that he can stay medicated. My understanding is that Concerta wears off pretty quickly (maybe even within a day??) so if your son took it and didn't like it, it wouldn't have a lasting effect.
Best of luck.