Tips for reducing fever in one-year-old babies It is a common phenomenon for one-year-old babies to reduce fever. Once a baby has a fever, parents should take timely measures to reduce adverse symptoms and ensure that the baby grows up healthily and happily. Here are some common tips and precautions for reducing fever: Wipe the body with warm water to keep the baby clean and hygienic. Parents can use warm water to wipe the baby\’s body, which can quickly lower the baby\’s body temperature.