Long post! Sorry!! DD is nearly one and a half and still guzzles at least four full 7oz bottles a day (including several night feeds). She's eating plenty of food so she doesn't presumably need it, but we tried cow's milk and she flat out refused it. Tried swapping night feeds for a sip of water but she wakes up and won't go back down till she's had her bottle.
She has no problem drinking from a sippy cup during the day but will not have formula from it, or cow's milk. She refuses a cup at night - just wants bottle. She has a dummy so we know it's not a sucking for comfort thing...
She's just transitioned into a new room at nursery where having bottles isn't the norm anymore so the workers don't give them as much as she's used to at home, even though we've let them know she's still on it. I totally understand why - but she's so distressed when we take her to nursery and I know it could be the whole "new people" thing but part of me thinks she's just upset because she doesn't get formula there. She screams for a bottle in the car on the way home. 
I'm sure people go cold turkey but I'm not sure I've got the heart for that. :( I'm a right softie.
Any advice at all would be greatly appreciated!!