I'm joining the unreasonable 2-yr-old club. Mine totally does what yours does, VQ, eating is our big battleground.
Arlo, when you eat your peas, you can have some ice cream.
Ooh thank u mummy.
Arlo, if u don't eat up now, you won't get any ice cream.
Don't want ice cream.
Right, eat up now or you'll go straight to bed.
Can Rabbit come?
Argh!
PR, I felt the same about new baby irrevocably changing the old one. Buti really believe now it's more his age than any jealousy thing. So if it's any consolation, i'm sure your DD1 would have become ahem, challenging, at this point anyway! I think it just makes it more difficult for us up deal with physically because your so often holding/feeding a baby you can't just get down and sort out the older one. And mentally with the sleep deprivation!