hi there, thanks for asking. The situation you described (snoring and dry mouth
upon awakening) is showing you have breathing related sleep problem. large tongue is seen in some problems like low thyroid function
. It could also be related to some other soft tissue
problems like amyloidosis
, etc which are not common). Low thyroid function can cause also breathing problem at nights. It is a common issue in women older than 50 years old. Ask your doctor to see if you have these issues. Best wishes with your health.