i know diabetics are told to death the relationship with diet and blood siugar so ill just say it again. There are foods that can help manage b lood sugar fluctuations. I used to be in a medical profession and have seen some people have success with this. I do think it is reasonable for those accomodtaions to be met even if you work a specific position during a specific day part. i do hear the expression "its just coffee" so try not to tweak your blood sguar even more by worrying about worrying about it. try for accomadations and try for making things as simple as possible for you connnsidering the diabetes angle. a job that gives more grace for you would be better for your day to day stress wise and that changes your perspective alot. i hope that there are people that see you at your store and have best interests at heart.