Bear with me -
DSS is 19 and autistic. This means his diet is very limited to plain pizza, chicken nuggets and pasta and sauce type stuff.
DH however insists on "trying" him with new stuff that he just doesn't want. Example - Christmas meal out DSS asked for a plain burger. DH said "but they do bacon and cheese burgers! Or look, kebab burgers! Chilli burgers even ... "
DSS kept saying no, he only wanted plain. No cheese, nothing.
So DH comes back with a cheese burger saying "just try it, it's nice". DSS took one look at it and pushed the plate away leaving the entire burger, chips, salad etc untouched. He then went and hid in the bathroom for half an hour.
DH does this all the time!! Just try this lamb, you'll love it ... cue, big plate of lamb gets wasted.
Just let the lad eat what he wants rather than him going hungry and shit tons of food going to waste, surely?