1. Provide a balanced diet: ensure that your baby gets enough nutrients every day, including protein, carbohydrates, fats, vitamins and minerals. Try to provide a variety of foods, including vegetables, fruits, whole grains, eggs, fish, meat and so on.

2. Establish a regular eating time: Make a fixed eating schedule for your baby, including breakfast, lunch, dinner and two healthy snack times. This can help the baby to establish good eating habits.

3. Control the supply of snacks: reduce the variety and quantity of snacks stored at home, and only keep healthy snack choices, such as fruits, nuts and yogurt. Avoid giving your baby snacks that are too sugary and salty.

4. Set an example: As a parent, you should be a role model for your children. If you often eat snacks yourself, the baby is likely to imitate your behavior. Therefore, try to avoid eating too many snacks in front of the baby.

5. Create an interesting eating environment: Try to make food interesting and attractive, such as making interesting shapes or patterns, or participating in the food preparation process with your baby. This can increase the baby's interest in food.

6. Give positive incentives: When babies try new foods or healthy diets, give them positive feedback and rewards, such as praise or small gifts. This can enhance their love and acceptance of healthy food. It takes time and patience to change the baby's eating habits. If you have tried the above methods and still have no improvement, it is recommended to consult a pediatrician or professional nutritionist for more specific advice.