Contact the school principal now *in writing* requesting a full evaluation. It takes awhile to get through the whole process so you don't want to wait until fall. Don't mention a 504 plan at all-if he needs Occupational Therapist (OT) then an IEP would be more suitable.
I have seen huge benefits from Occupational Therapist (OT) and using sensory strategies at home and school. Pick up a copy of Carol Kranowitz's book The Out of Sync Child--it's a good book to start with. Private therapy is better than just relying on the school because you will be able to sit in on the sessions and learn what you need to do at home.
medications can be a huge help to a child with anxiety, provided the right medication is found. When we'd exhausted all other options we used an SSRI with difficult child and had good short term results but 9 months later side effects outweighed the good. The second SSRI he did not do well with--side effects were fast and hard. Obviously we weren't thrilled about going that route again. It's forced us to be creative and help find coping strategies plus it's been far more effort. My difficult child is an excellent compensator who eventually usually catches on to a necessary skill given some extra time and training so this has been a viable option for us. But I can honestly tell you there were some times along the way I would have welcomed having a medication alternative to give him some relief from the angst.
Congrats on finally getting some answers. Big bummer it's taken 7 years for the doctors to listen...
