I find with Pip, even now, that he will sometimes not eat cause he wants (i think?) the attention he used to get when he was younger - so I will feed him with his fork etc. And then he knows that I won't take him out to cafes while shopping (which is "us" time) unless he has good manners. So we've a kind of truce happening. Other things we try is giving DH a bite of Pip's food, or me - that tends to make him upset!

good luck