Finn's the same, it's his comfort. He dropped the AM on his own, after a few offers and he didn't really drink from it, we just offered a sippy and no more bottle. The middle bottle we sent for the first month of daycare but then he stopped really wanting it on the weekends, so we just stopped sending it too.
The bedtime bottle is now his vice, it's the one where he will cry and fuss until we give it, he smiles as soon as it is handed to him, he gets comfy and rubs his head and that's his comfort. Not taking it away any time soon :-)
You'll get there Karen, he'll probably do it when he's ready.