Level 1: Why don’t babies take bottles? 1. Physiological reasons In the first few months after birth, the baby\’s digestion is not fully developed, and there may be indigestion or gastrointestinal discomfort, which makes the baby unwilling to take a bottle. 2. Psychological reasons Some babies may refuse bottles due to psychological reasons such as lack of security or poor parent-child relationship. 3. Habitual reasons: If the baby has been fed breast milk, he may develop resistance to the bottle and needs to make a gradual transition.