I have to get Tim to sit down and watch Mr. Honeycomb for a stretch of time, because I think he's actually doing a bit better. It took me a couple of days to get the omega pills (turned out we had some extra that hadn't quite agreed with me, apparently my body is picky about which fish oil it is), and I pricked the end and put a drop in with his meds, all of which were generously mixed with Ensure. He did stare at the new concoction, sniffed at it, then ate it all up.
So two days of this, and twice now I've found him climbing the sides of the cage when the girls were particularly excited and doing the same (medicine time, because my shoulder is totally screwed and I can't give them their meds individually in the travel cage on the floor, so I put the travel cage on top of the big cage and give it to them there). The girls are desperate to each have their turn eating all the yummy stuff - and twice now, I've almost had a heart attack seeing Mr. Honeycomb climb the side of the cage! He hadn't done that in quite a few weeks, which I'm taking to be a great sign.
So, moral of the story is, even the stinkiest fish oils are amply covered up by Ensure, and the omega 3-6 fatty acids do seem to help with neurological HED.
Stay tuned for more observations!