Assuming you are trying to get your baby to accept express milk in bottles, or cups, it is important to realise that although the taste is familiar to your child, the method of delivery is very foreign. Your baby associates you with breast milk, so you should let your partner offer the cup or bottle, instead of you trying.
Mix expressed milk into food, so that your baby will eat it, due to the familiar taste. Babies are good imitators, so if the rest of the family drinks from cups at the table, curiosity and mimicking behaviour ought to compel your child to use a cup without too much coaxing. Start off by giving your child an empty cup and pass it to other family member to take an imaginary sip. Once your child copies this, introduce small amounts of express milk into the cup. Repeat this exercise at consecutive mealtimes and eventually your child will start drinking from the cup without fuss.
