Hi GaryG
Yes this is pretty much normal. My Dad uses a humidifier at night; sometimes my mother says the bedroom is like a rainforest ha ha. My Dad likes MouthKote at night; he keeps a bottle on his night table and takes a few squirts when needed.
Everyone is different; so it's hard to say as to when you will get some releif. For my Dad things have improved with the dry mouth. It takes time.
Best wishes,
LisaB