My DS 11 yo shows signs of ADD - very forgetful, very slow to do tasks/chores, procrastinates, doing homework in a timely way is an every day struggle, argumentative. He seems overwhelmed by tasks so I have been breaking them down for him and this seems to help.
Coco, fwiw, my ds seems forgetful, is slow to do tasks, seems to procrastinate, takes a lot of time to complete his homework even though he understands the concepts and has the answers, and is very disorganized. Like your ds, it helps tremendously to break things down into steps to keep him on track and organized. He also was held back in math at one point due to inability to perform quickly on timed math tests - but the best thing we ever did for him was to switch him to a school that put him where he was able to be challenged in concepts and skip over the whole timed-math-requirement. He is great at math, just not very fast!
Anyway, the reason I described my ds to you here is that he *doesn't* have ADHD - he has Developmental Coordination Disorder. I don't necessarily think your ds has DCD, but in the course of advocating for our ds we've come across professionals who thought he had ADHD as well as being on the autism spectrum. Our neuropsychologist has a chart which shows how many of the symptoms of each of these diagnoses (including ODD and others) overlap - and that's why it takes a professional such as a neuropsych or developmental ped who understands how to look at a wide variety of clues in tests and behaviors before making a diagnosis.
It can all be *extremely* confusing!
Best wishes,
polarbear
ps - re the WISC scores, my ds has a significant discrepancy in processing speed vs the other subtest scores - much higher than the discrepancy your ds has. However, I've read that any discrepancy greater than 1.5 SD might be significant.
Re the timed tests, rather than an IEP (which is used when students need individualized instruction) it sounds like your ds would benefit from a 504 plan and an accommodation of extended time on tests - this is a fairly routine accommodation if you can show a need for it, and I think an ODD diagnosis combined with evidence from prior testing that he is answering questions correctly but running out of time would qualify as a need. Extended time is (at least here) one of the *easiest* accommodations to get.
