Apart from the bottle of milk in the morning which I give my son "milk bottom", the rest of the time I give him 'cup with a straw'. The reason I still give him bottle for milk is because he drinks more milk with milk bottle. If I offer him cup with straw for milk, he will have a few sips and put it away. I don't know but this is the case. So in order to get him to drink more milk I have to give him bottle. BUT, I have an intention to wean him off bottle completely when he turns 18 months (now, he is 16 months!)