It's best not to be too quick or you risk engorgement & mastitis. The no milk at night rule can work, but expect some resistance and get your partner to help. She may need food and/or liquids during the night, too, so be prepared to offer something else (water and even food, yeah)

Just by the by, don't expect your little to stop waking if you stop feeding her to sleep. doesn't always work that way I'm afraid.
The ABA also has info on weaning and how to go about it if you want to contact them.

Hope it goes smoothly for you - call in all the help you can