my dd1 grace is almost 5, she has 3 milks a day of about 200mls each, she would ask for more too she loves them and her water and eats well, she is a skinny little thing and her teeth are beautiful (or so her dentist says) the milk issue peaked at about 2.5yrs of age where she was waking for them every two hours...... Most of us can not even begin to imagine what some little kids survive on, from nothing at all in 3rd world countries to never eating a veggie or fruit.....i say milks the least of our troubles....

also i have always found with kids that the moment you begin to go insane with worry about a stage they are at they go and change all by themselves.... be cool man, it wont last forever