As you are asking I guess you probably already know that what you are doing has to change don’t you? I expect you know that you won’t get much goodness out of coffee. You probably also know that eating once only in the evening is not doing you much good either!?
Well that all sounds to me as if you need to start your changes by eating little and often as you need to keep your BG as level as you can.
Many of us, and I am one, have to keep the carbohydrate content down to stop my BG levels going sky high so for breakfast I have things like bacon and egg, tomatoes, mushrooms, scrambled eggs, poached eggs, boiled eggs, omelette, smoked haddock, kipper, cold meats, cheeses, fruits and yoghurts.
Amongst other things for lunch I have home made soups, sometimes the things I have already listed above and salads.
The main thing is to test before you eat and 2 hours afterwards so that you know what your food is doing to your BG levels and then adjust accordingly. Some of us can manage more carbohydrate than others but you will only find out what is right for you if you test.
What do you enjoy eating and what do you have for your dinners at the moment?