I can provide you with some methods to improve the baby's lip valgus. First of all, it needs to be clear that the baby's lip valgus may be caused by many reasons, including genetic factors, muscular dysplasia or other potential health problems. Therefore, it is recommended that you consult a pediatrician before taking any measures to get exact diagnosis and treatment suggestions.

Here are some possible ways to improve your baby's lip valgus:

1. Physical therapy: Pediatricians may recommend physical therapy, such as massage and stretching, to help strengthen and improve the baby's oral muscles. These therapies can be carried out under the guidance of professional physiotherapists or pediatricians.

2. Orthodontics: If the baby's lip valgus is caused by abnormal tooth arrangement, orthodontics may be an effective solution. Pediatric dentists can evaluate the baby's oral condition and provide corresponding treatment suggestions as needed.

3. Surgical treatment: In some serious cases, surgery may be necessary. Surgery can improve the baby's lip valgus by adjusting the oral muscles and tissues. But surgical treatment is usually the last choice and needs to be carried out under the guidance of a professional doctor. The above methods are for reference only, and the specific treatment plan should be determined according to the baby's specific situation and the doctor's advice. Consulting a pediatrician as early as possible can help you get the most accurate and appropriate treatment plan.