I'm not diabetic but I do have a condition that does cause to me suffer from hypoglycaemia. Unfortunately for me, when treated, I will suffer repeated attacks for hours on end unless I get some very specific IV fluids and steroids. It is best avoided!
One of the ways I avoid attacks is to ensure that I eat my meals at set times and do not under any circumstances skip them.
I don't do the avoid all sugars routine at all. I do try to avoid processed sugars though. I eat a lot of dates and dried fruit, along with nuts.
If I am exercising, then I need to ensure that I have had both quick and slow release carbohydrates before I go out. Quick to get me going and start me off, slow to keep me going later one. I will always ensure I eat something small hourly when exercising. And plenty of fluids. Your body is at its worst dehydrated, so help it out and drink plenty of water.