I'm not sure what else I can really add... but here goes...

DS1 (5) has ASD (Autism) SPD (Sensory Processing Disorder) Developmental delays a severe speech disorder and a LOT of issues with eating (sensory mainly, but he also plainly refuses to eat at times). We pushed for a diagnosis because we were struggling to cope. Getting a diagnosis has been the best thing for him, we have received a lot of help as a family and he has received a lot of help as an individual. Therapy wise he does regular speech and OT plus 4 hours a week one-on-one with a therapy assistant (she works through the therapy goals with him). He does see the physio occasionally and a dietician helps to keep an eye on his diet. We have a meeting every school term with a child psychologist and all his therapists, teachers, EAs etc to make sure everyone is on the same page as far as his schooling and development goes.

Have you tried letting him eat off your plate? Sometimes our food looks better There's also a book, I was made aware of this morning, Deceptively Delicious. All about hiding vegies in foods, like broccoli in chocolate!

DS2 also has a diagnosis of SPD, however it's not something we pushed for, it was more accidental. DS2 comes to DS1's OT appointments and it was there that DS2 was referred to the OT for his own issues (he's an avoider, just shuts down when things get overwhelming for him). Having the diagnosis has made no difference, but he is not in school yet (3 in June) so we are doing OT and probably speech (again) for the time being to hopefully prepare him better for Kindy in 2014.

If you aren't already then I suggest seeing an OT, or in the very list jumping on the waiting list. An OT will be able to help with the sensory things.

Hope that helps!