Nasal congestion dry mouth. In midnight.

I am suffering from chronic sinus problem since 2011. Initially I just lost my smelling sens but it's comes back off and on after an episode of cold or I can say my nasal passage get clear after the cold. I consulted with a doctor in 2018 and He suggested that there is deviation in nasal septum with some inflated polyps so he suggested surgery. I did not opt the surgery because I am an allergic guy with weak immune system. I am very prone to cold sensitivity and frequent sneezing with allergy.My Doctor suggested me that I  can carry on without surgery with the help of nasal spray. In the month of March 2020 , I started some breathing issue so I consulted in Medanta hospital so I went through some chest x rays and absolute esonophils count which is normal. Now I am on allergy medicine since March with nasal spray and mouth spray. I was normal till september but my problem started getting worst with high heart beat and Now I wake up around 2 or 3 am in midnight .