I think its a mormal stage that a lot of toddlers go through judging from what my nieces and DD is like, DD2 often eats more than DD1. We ended up having to give in and give her more milk during the day and she stopped waking up at night time. Now we are working on introducing more foods, she likes to graze too, so I keep lots of bowls of food topped up with her favourites which are cheese, bananas and rasberries at the moment. She asked for food before so that made me happy! Its not easy and I am sure sits why she gets grumpy when she hasn''t eated, We are trying to encourage her to eat by having her help make her lunch or pick some of the herbs for dinner. I also get her to help make cookies so she can have them if she eats all her lunch or dinner.