Cough cold bronchitis. For levolin puff?

Hello, my daughter is 5 years old. She's had cough fever and cold last couple of months. Treated her with azithral first, then augmentin. She's better now. The cough seems to have not gone though. It's wet cough. She's on montair lc every night for the last 2 months and momeflo nose spray to avoid snoring etc. On the advice of doctors.i have stated brozedex 4.5 ml thrice daily along with this now. Been 6 doses so far. Last night she coughed constantly. How long can I wait for brozedex to help. Is there a need for levolin puff? Will that help. She's got no fever or cold. Just constant strained cough with phlegm. She's not spitting it out. I'm worried cos this has been on for a while now and she's on too many meds already including eye drops for allergy. Please advise I'm worried. Thank you