How should I introduce my baby to regular milk?

If your baby is still nursing, you can offer whole milk in a cup and wean from breastfeeding as you desire. If she is on formula, just switch to regular whole milk. Many 1-year-olds will do fine with the abrupt transition, but if you or she prefer, you can mix the formula and whole milk to slowly transition her to the new, cold taste in a few days. Ideally your child will drink cold milk straight from the refrigerator in a cup. But if she is currently hooked on a bottle, you can switch her to the taste of whole milk in the bottle first, then a few weeks later, get rid of the bottle and use a cup.