Hello Dr.my Daughter Is 4 Months Old, She Has Cough

Hello dr.my daughter is 4 months old, she has cough and runny nose. She is taking vintoline and pulmicort +tonimer nebuliser. And she is taking fenestil. The cough still anything is recommended or that'ok but need time. For how long she should keep taking the pulmicort 0.25mg/ml