How to deal with a child's cough and stuffy nose

Patient's question:

Patient Age: Two and a half months
Condition Description: Since today, the child has been coughing a bit, not very severe, but when coughing, it takes 4 or 5 times to stop. It sounds like something is blocked in the nose, making it difficult to breathe smoothly. What should parents do? The best option is dietary treatment. Additionally, the past two days, both my husband and I have had a slight cold-like symptoms. My symptoms are itchy upper respiratory tract and dry heat. The child is breastfed. Can I take medication? What kind of medicine should I use?
Past Treatment and Effect: No treatment has been given yet
Desired Help: How should I care for the child? What kind of medicine can adults take?

Doctor's answer:

Hello, the child has a cough and nasal congestion. First, consider the possibility of a respiratory infection. If it's just occasional coughing or not very noticeable, you can wait and see. If there is significant coughing and nasal congestion, the child is currently very young, and it is recommended to seek medical attention actively. Do not delay, and do not recommend self-medication. It is necessary to consult a doctor for examination and confirmation of the treatment plan.
At 2 months old, a cough is likely a upper respiratory infection, with a high probability of a viral infection. It is important to strengthen care and minimize the use of medication. Monitor the child's temperature, feeding situation, and bowel and bladder habits. If the cough persists for more than 5 days, it is recommended to see a doctor.