Talk to Internal Medicine on Dry Mouth While Sleeping

aslaam u alikum. me jub sota ho mera mu bohat zayada khushk ho jata hai. jis ki waja sy bar bar nend disturb hoti hai or me sari rat pani k sip leta rehta ho. me ne ak sal pehly ENT specialist ko check karwaya tha unho ne kaha ap k naak me polyps hai. me ne surgery karwa li. ab naak bilkul khula hua hai. laken dry mouth while sleeping wase hi hai.. ENT doctors ne kaha hai k ap ka dry mouth nose ki waja sy nahi hota is ki koi or reason hai.. me ab kis doctors sy consult kro?