You continue this way until the child is down to just the morning and bedtime feedings or the two that they enjoy the most. There is no rush to get rid of these two, but when the time comes it is helpful to make these favorite feedings less appealing. For bottlefed babies give them a bottle of water instead of formula or juice. For breast fed babies introduce them to a bottle and then substitute the pumped breastmilk with water once they have gotten used to the bottle. With breastfed babies it is helpful to have someone other than mom give these feedings.
Breastfed babies can smell mom and are more likely to reject a bottle that mom gives.
Weaning is a big step for both parent and child. You may find that your child goes through an adjustment period where they are crankier than usual. They key is to be encouraging and interactive. Praise them and act excited when they drink from a cup. Make the cup a fun thing.