I am suffering with same exact symptoms as you are. My eyes are bone dry. They sting and burn like acid is in them. I can feel the sticky dryness and yes, nights are the worse. I have to pry them open with my fingers because they are so gritty and painful. I have to use lubricating eye drops, the moment I wake up so they don't hurt. My mouth is also desert dry. The same tongue stuck to the roof of my mouth in the night happens to me as well.
Thank goodness that I don't have dry nose buy food gets stuck to my dry throat on many occasions.
These symptoms have made me think of sjogrens also. Mines have been around for about a year also and I feel like its getting worse too. Its affected my computer usage and its all around annoying and uncomfortable. I mentioned sjorens yo my doctor and she dismissed it. She told me the disease is much more than just dry eyes and mouth. She even refuses to give me an autoimmune test panel because my symptoms do not warrant it. She knows of my health anxiety and think she's fighting me be a use of it. Its driving me insane.
Anyways, the doctor insists this is hormonal. Even though your 42, like me, doesn't mean your not beginning Peri menopause. Hormones begin changing in our thirties and for some women, it causes this dryness. I'm kind of more inclined to believe it now, rather than believing its sjogrens because I knew someone with sjogrens and its true, the symptoms are extremely severe, as in having to be admitted to the hospital sever and it just so happened she never suffered from dry anything. Go figure.