My 2 year old generally is well behaved but in the last few weeks has become obsessive about who is to change his nappy, push his buggy, get him dressed, (usually I have to do everything) if I put my foot down it results in the worst tantrum i have ever seen, he cries so much he is almost sick, I have ignored him for 30 mins like this, but then give in. Is it a phase? do i put my foot down every time and deal with the tantrum to make a point, or just go with the flow until the phase passes, any help would be appreciated.