What are the good treatments for pneumonia?

Patient's question:

My son's doctor said he has mild pneumonia. After asking you, I followed your advice and had a chest X-ray, which showed no problems. However, the doctor also prescribed anti-inflammatory medication, starting with cephalexin, and then switching to another anti-inflammatory when the coughing reduced significantly, with almost no coughing left. Three days later, they added another medication. I'm concerned about whether it's necessary to use such strong medications. Money is not a big deal, but using these drugs on such a young child could lead to antibody development in the future, which is a problem. And since there's almost no coughing left, I asked the doctor, and they said it's still necessary to receive intravenous fluids (the total treatment duration is one week) and that pneumonia at least takes a week to recover. They also said that using these medications for a week won't cause any antibody development. What I want to ask is

Doctor's answer:

Hello:
1. Treatment requires a sufficient course.
2. To avoid the development of drug resistance, sensitive antibiotics can be chosen.
3. The specific recovery time depends on clinical symptoms and test results.
4. How to prevent and treat children's pneumonia
Children have low resistance to diseases and poor adaptability to the environment. If they contract pneumonia, it tends to be more severe, so prevention must be taken seriously. Infants should be kept away from external contacts as much as possible to avoid cross-infection. If family members have colds or other respiratory infections, they should be isolated from the infant as much as possible. When feeding, be careful to avoid choking, spilling milk, and vomiting, and prevent milk, food, and vomit from being inhaled into the lungs. Provide the necessary and sufficient nutrition based on the child's age and physical development, and add complementary foods such as vegetables, soy products, meat, and eggs in a timely and appropriate manner. Actively prevent and treat rickets, as it has a close relationship with the occurrence, severity, and treatment outcomes of pneumonia. Encourage outdoor activities, exercise, and practice adapting to cold climates. Get plenty of sunlight, keep the indoor air fresh, and prevent colds and influenza. Ensure all vaccinations are up to date to enhance the immune response of the respiratory system to pathogens.
After pneumonia, timely treatment is crucial.
Although pneumonia poses a threat to children's health and life, it can be avoided with active prevention. If it does occur, early detection and treatment under medical guidance or at a hospital can lead to a rapid recovery and full cure.