Hello everyone! My son still has a cough that doesn't go away? He cou…

Hello everyone! My son still has a cough that doesn't go away? He coughs, straight like with phlegm. The doctor prescribed Fenistil 5 drops twice a day with a saline solution for nasal irrigation and Nazoferon before. Today we went for an appointment, she said there is a slight hoarseness and prescribed nebulization with a nebuliser. Still runny nose, but more than anything, it scares him of coughing. I'm thinking about showing my child to another pediatrician, do you think it's worth it? I'm afraid of complications and antibiotic treatment ?