My 4 y.old still has a cup of warm milk in the morning and at bedtime. I dont see anything wrong with some nice warm soothing milk! I did stop the bottles at around 18 months though, & moved to a sippy cup. I just did a non spill cup so they still have to 'suck' a bit, still comforting, & then moved on to a proper cup. I had to persist for a while to make the transition from bottle to sippy cup,but just kept offering each night. If they refused,I would pour the milk into a bottle. They took it eventually, maybe took a few weeks though.