What should I do if my nine-month-old baby sweats a lot during sleep every time?

A 9-month-old baby often sweats during sleep. Here's what parents can do: 1. Ensure the baby's sleeping environment is comfortable. Indoor temperature and humidity should be appropriate, and air conditioners and air circulation devices should be cleaned regularly. 2. Dress the baby in suitable clothing—choose breathable cotton fabrics to keep the baby comfortable, and adjust sleepwear according to indoor temperature and humidity as needed. 3. Parents should also provide the baby with an adequate amount of water to maintain proper hydration, which can help reduce sweating.