I'm on the spectrum, as is DH, we suspect DS is as well.

Personally, as we're fairly mild, it isn't worth getting a diagnosis. We could have one each if we so chose, we choose not. It makes life harder for mild cases, not easier. And therapy to stop being me? I'm really that objectionable? Sure there are tricks I have had to learn to cope with everyday life, but a loving parent could have taught me them easily and with kindness.

As for the food - the body craves what it needs if it isn't provided. Trust me. In my life I have lived off the same very bland meals for a month and still been healthy. I then fancied a bit of a change. Have less of an issue with it now, but that's another story. Hummous, jam, fruit icy poles and fresh fruit juice DO contribute to the 5-a-day for fruit and veg. Your son's diet may be dull (for you) but it isn't the end of the world.