Getting a child to transition from bottle to cup can vary in difficulty and may require patience. It is important to choose the right cup for the child's age and abilities, offer familiar liquids like breastmilk or formula, and present the cup in a similar way to a bottle at first while sitting down. Over time, the cup will replace the bottle as the child gets more comfortable with it, though it may be necessary to still use the bottle for some feedings like before bed at first.