Hi Tony,
I have 2 boys 13 and 15 and know how hard it is at times to motivate them to do their homework. To top it off they do have special needs. One has a very hard time with comprehansive and therefore would have a hard time when he read something to explain it. He was more a visual learner. They now will read books but it has to be of interest to them. It is hard for some people even myself to sit and read. Like the others said I would talk to him more about what else might be effecting his reading. Ask him questions, sit with him and see if he is struggling and if so let him know you can get him extra help. If need be ask for testing at the school.
When you mention AR Books what does the AR mean? Is he able to pick out books he is interested in reading? My boys are not allowed to play any game system or games on their comps during the school week. Only weekends, but only after they take care of their rooms and any homework they may have. If we didn't make these changes they would be failing school. You can tell him he won't play soccer if he fails again. But you should also have something that is more instant. Like he is not allowed to play his game system or things he enjoys until he does his reading. Only then will he be allowed to do things he enjoys. Get him into the mode now because when he starts the puberty it is much harder to control. I know how hard it is to keep all this going while running a business. I also am a childcare provider and take care of special need children.
We also set up desks and a quiet place in my boys rooms to do their homework. Also neither is allowed to have friends over during the week. Unless they start doing things as we say. Well so far that rule has been into effect for a long time.. lol. They can on Friday , Saturday and Sunday, and meet them up at the rec center at night when we go but that is it.
If you want to chat more please feel free to contact me offlist.. ____@____.com