Title might not be right for the question I wish to ask, and I am reposting here as well as in education 
My DS is currently in yr3 and has sensory processing disorder, which is affecting his ability to do as well as I think he is capable of. School think highly of him, but do not push the 11+ at all, for anybody.
The SPD, however is probably the absolute problem. Should we just write off the whole idea of the 11+ because of this, or try to tutor at the right time? When is the right time? Should we be staring earlier to compensate, or are we being complete idoits even entertaining the idea?
Are there any puzzles etc we could be doing at home without stressing him out, because that is absolutely not my intention.
He is an avid reader and prefers literacy to Maths.