On the learning comprehesion, for memorizers, it is best for him to partner with a child who has an imagination and can conceptualize but can't memorize well or at all. I was the imaginative child with zero memorization ability. I made a point of partnering with the memorizers and the kids that just KNEW the answer, but couldn't explain it. I would force them to explain it to by filling in the in-between steps that I was aware of. In the end, they helped me get the answer and I helped them understand where they got the answer from.

This took longer, but it helped all of us retain the information well past the exam. It helped me retain the information for decades, once I learned something this way.

On the stealing toys from siblings, that can be just an attention stealing attempt by him. Are his siblings younger or older? If it is a sensory problem like visually blind to his own toys that are just sitting somewhere in plain sight, but to him they are invisible, then I recommend having a few of his toys that you have him specifically touch and when he is done with them put them away himself so that he has touch memory of where the toy is.

I have problems with visual "blindness" and have to touch things if I ever want to know what happened to them. Otherwise, they cease to exist. I moved a few years ago. My husband did most of the packing. Some of the boxes went into the basement without me ever touching them. Everything in those boxes disappeared from my memory or were filed away as "lost". My husband can say it is in the basement all he wants, I will NEVER find it unless I open every box in there.

My house is a giant library, but I can't read the titles of all the books unless I spend extra time to concentrate on it. I have to have special spots where my next reading material is located or it will never be read. I just "can't" pull something off a section that wasn't a designated spot and start reading it.

I am not on the autism spectrum at all.

I have an ion channel disorder. When I am in an attack, I switch from Hypersensitive to Hyposensitive. I can switch completely back and forth in less than an hour. When I am Hyposensitive, I have to be extra careful that I don't injure myself. When I am Hypersensitive everything irritates me. The Hypersensitive mode sometimes triggers my Hypokalemic Periodic Paralysis when the pain load gets too high and that is when I switch to Hyposensitive.