I agree with the checklist. I didn't like it much, and H really didn't have a significant amt of checks in the areas we were concerned about. But I do like the list for seeing all the categories. If there is a predominance of ticks in an area, then you may want to try some strategies that will help that area. The book is much better; see if the library has it. ;-)
Also, the sensory profile we saw from the occupation therapist was much better; it actually is designed with normal in the middle (like the bell curve) and uses a Likert Scale. Likert scale is where you have a range of choices as a response to a question like "almost always, frequently, occassionally, seldom, almost never" just to give you an idea. A total of about 50 questions. The online checklist is not really a psychometric testing instrument from what I can tell. The Winnie Dunn Infant/Toddler Sensory Profile is a questionnaire; it lists a typical performance score range in the center. Then there are two categories called Probable Difference categories on either side of the typical range. Then on the furthest two categories on either side of Probable Difference are the categories of Definite Difference. I don't know if I am describing the instrument well enough for you to get an idea. It measures general processing, auditory processing, visual processing, tactile processing, vestibular processing, and oral sensory processing. H was very senstive to certain food textures (and had some of the oral sensory things going on, too).
You mention behavior, what were they wanting to assess? Nov. is a ways away. :-( Check out the book, and see if anything stands out to you regarding sensory areas. If something stands out, then you can start to tailor some things to fit his needs. I'm sure you already know things that do not work. Look for what works and what he likes; then find ways to incorporate those strategies in other areas like sleep (like likes to be snuggled). H is always wanting something "cozy".
It depends on the child as to what sensory input may help. We put H in a blanket rolled tight. Did you ever use a grobag and that worked? It's like wrapping him in a bath towel around him under his arms. Open the blanket; he stands in the middle; I wrap one side over and then the other; kind of like a burrito. If he is sensitive to noises, are there any that may be waking him? Is he in a quiet part of the house, or do you think that may help? We have a dog, so it helps screen her noise (and mine) too. It isn't loud; we use an air cleaner or a fan to cover up other random noises. Tossing out some ideas; I know you have tried so many things. XXXXXXXXXXX