I also have a 9 y.o. son who is dyslexic and homeschooled. Here are several suggestions:
Have him evaluated by a specialized opthamologist (MD) for eye tracking/developmental problems. Some kids that appear dyslexic have eyes that do "weird" things and improve with eye therapy (ours didn't have that problem)
Get "Phonics Pathways" and use a blank paper to cover up all the lines below the one he's reading. You can use another paper to cover the ones above it if that helps. They use what they call "eye-robics" to help train the eyes to track correctly from left to right.
For spelling issues, have him use sidewalk chalk to write his words on the driveway/sidewalk. Also let him use sandpaper under his paper. The tactile stimulation helps program the correct sequencing in the brain, especially for dyslexia. It looks funny, but helps quite a bit.
Although this will be difficult, you've got to force him to do all his reading. Dyslexia is something that each individual has to take responsibility for adapting to. The longer you read for him, the less reason he has to figure out what will work for him.
I also know of a woman here in Little Rock who specialized in helping kids with dyslexia through reading therapy, etc. She's getting ready to move soon (I think to Hot Springs), but she may know of someone else who does it. Let me know if you would like that info. (One suggestion she made to us was for him to play the electronic game "Simon" because it forced them to follow a specific pattern)
Finally, pay close attention to HIS attention. Our son's dyslexia gets markedly worse if he's tired or having a bad attention day.
Good luck, it's tricky. Most therapists, and even the school systems no longer consider dyslexia a learning disability and do NOTHING to help kids trying to deal with it. Our son struggled with it for 3 years before I found someone who understood it and could help. He still has his days where it's rough, but he's getting much better. He enjoys reading and has recently finished the Narnia series, as well as Eragon. God bless.