Hi Cando, welcome to the forum.
When is your meeting with the learning support team? It appears that the child psych who tested and counseled your son went as far as she was able, but that you are going to need to pursue this further. I get the sense that you are not in the US. Do you know of resources "near" you for 2E testing? (near in quotes. Some of us have been known to drive and even fly great distances to see specific 2E specialists) Perhaps the learning support team might be a resource for you to find qualified people to help you help your son.