Hi Angela,
Are you drinking with your meal? Toast is very dry and anyone, diabetic or not, benefits from having a drink to help moisten our food and not have dry foods use up fluid already in the body. That is not a medical opinion at all, just a logical assumption taken from my own experience that I hate eating a meal without a drink
Now you're going to tell me, 'Yes, of course I drink with my toast', in which case all I can say is I have no idea. I would suggest that a dry mouth with a 7 blood test is most likely not caused by the blood sugar. 7 is completely within the normal range for a non-diabetic two hours after a meal.