If you're getting confused between 'hypo' and hyper', here's a few hints:
I find it easiest to remember that 'hypermarket' means a very large shop. So 'hyperglycaemic' means a very large amount of sugar, which needs more insulin to balance it out.
So 'hypoglycaemic' must mean the opposite. i.e. a very small amount of sugar, which means that the insulin dose is excessive.
So if you're suffering 'hypos' you should be reducing the dosage of insulin. (Of course, such action should only be undertaken with medical supervision).
As others have suggested (and I'm sure you're already aware) the 'if in doubt' golden rule for emergencies is to increase your sugar levels. Excessive sugar can have adverse effects but the onset is slow. Insufficient sugar can lead to immediate medical emergency.
Chris