Level 2: 1. Why do babies hiccup after drinking milk? 2. What are the dangers of hiccups in babies? 3. How to help babies relieve hiccups? 4. How to prevent your baby from hiccups during feeding? 5. Under what circumstances do you need to seek medical treatment for your baby’s hiccups? 1. Why do babies hiccup after drinking milk? During the feeding process, the air entering the stomach during swallowing can cause irritation.