Lov3shy, our ALL family are like that!! For me, I give my tongue a good scrubing when brushing my teeth. Gag - for most of it! Sorry! But, it goes get rid of alot of the aul nonsense from the back of the throat and nose area + the 'pipes' leading into same! Give your nose a good blow & hoke out. & afterwards a good gargle with some salt water. Now when You've done all that, just have a drik of water and take a bottle of same our and about with you - a few wee sips now and again shud keek it a bay!
If You had diabetes, you would constantly 'crave' a drink and also sweet stuff! Not ruling it out, but wouldn't think that's the problem love!
Think of it like if, YOU had dry skin! You would need to lubricate that constanly with lotions or oils! So your mouth is just the same!