We went through this too, this is what works for us-

Firstly only two cups of milk a day one in the morning and one after dinner if dd eats it all. No snacks after 4pm.

Dinner we make sure the different types of food is not touching, it can't be too hot and if it's a new vegie she has to try it. If dd doesn't eat it then nothing else is offered, like others we give her until after her bath to eat. It took a lot of tears but she knows now and eats most nights. Cutting back milk made a big difference she will eat a lot now, it used to be a struggle.