Suggest Treatment For Wheezing And Nose Blockage

Hello Dr, My daughter is 2.7 year old and having blocked nose for a week now and weezing . she has been picking up cold from school almost for a month now. I consulted child Specialist who put her in to 1. Asthalin 2. Zedex-P and LAZ-200. as well Otrinoz Nasal drops 3 times a day. After 3 days she improved a bit and we done her PNS X-Ray and blood test the results are normal. Thus on the second visit Dr said the reports are normal and the cause of blocked nose may be because of allergy and gave her Montus -kid tab 4 mg per day (for 10 days) as well included septran in the list. After taking the Montus tab on the first day I noticed, she is having bit more problem while sleeping beside the blocked nose and breathing through mouth. Her mother complains that bill is not working for her and it is blocking the mucus coming out through the nose as well. As well she mentioned even year before montair LG did the same thing for the child like disturbed her sleep and blocked the mucus. The main concern for my daughter is blocked nose in the night and having double in breathing through nose. What is the best way forward, should I ask my doctor to suggest a spray instead of the above bill. This looks bit complicated for now now. Please help.