The GP recommended we give Jon pure fish oil. Ones from USA that is molecularly distilled cos there are chemical / toxic inside deep fish. Got the softgel pure fish oil through my sister from USA.
Started it and saw a little change in Jon's behaviour. He's more calm. Very little jerky involuntary movements and also his nose...that was snorty for a while, became clear.
But one side effects....soft and sometimes watery stools. I think I'll change it to once a week.