That "feeling" you get with low blood sugar just try to remember it and if you pay attention you can tell when your blood sugar is low or dropping. People call me crazy (not just on this), but I think the leaner you are the better off you are because you don't have all the reserves of larger people. I'm extremely thin and I feel like I'm living on what I ate the last meal and I feel the up and downs more apparently than larger people. Maybe crazy.
62 is not end of the world. I'm not sure what is going on with your eyes. I will normally have an idea it's time to eat at <100. By 80 I know it's really time to get some sugar. If it gets into the 60's or 70's I know and I'm not eating or drinking for a reason. Like knowing I'll be eating a meal in another 5 minutes or something and I already know it's low.
At least you feel it, my brother in law apparently doesn't. He had been warned for years that eating an entire box of little debbie cakes at once was not a great idea. He went to oral medication and now is on insulin and has no clue what his blood sugar is.