Depending on the degree of dns, surgery will be an option. Nasal spray also can be tried.

You should take 2 weeks medication followed by surgery depending upon deviation of septum and your symptoms

In most cases, an ENT specialist usually start with medical management. If there is no adequate response then surgical correction to address a deviated nasal septum (DNS) or enlarged turbinates, may be considered. However, It's important to have a proper clinical examination by an ENT doctor, as CT scan findings alone may not give the complete picture.

1st go with medical management if symptoms can not subside by medical management than surgery can be done