It could be a hypo from too much insulin, but you can't be sure without knowing the blood levels. The acting blind and wanting to eat so much does sound like low levels. I just don't know - you are only guessing. One unit could be too much or too little.
Do you have the lancets and meter? Could you try to get a number tonight? If you try it, be sure to warm the ear. If you have the smaller gauge lancets (30-31 gauge) you might need to double poke. At first 25-27 gauge may work better.
If you can't get a number, either skip or reduce, I guess. But the sooner you can get numbers, the better.