M.O.
My son will be 17months tomorrow. I just did the transistion this past weekend. The first 2 days were hard but I stuck to my guns and he is over it. He has been bottle free for 5 days. I did notice that he preferred his milk to be cold from the cup whereas he liked his bottles warmed. I am using the Gerber lil sports cup for him specifically for his milk only. And I use platex sippy cups for water and juice. That way he isn't disappointed when he really wants some water and gets a big mouth full of milk. He knows which is which. Good luck. I know how hard it can be.