So, if you're referring to the 'time he dropped into the green' as 7/13 - yes, you shot a nice low number - a perfect number - but then didn't check again for 5 hours? Those are the kinds of circumstances that might make you consider not shooting - perhaps you were out for the evening? Since I wasn't there at that date I don't really know what happened...but my recommendation to you for this evening is to give the insulin and then observe to see that he's eats all his dinner - and be sure to get another BG test in a couple of hours - if the numbers are still going down, you'll want to give him a little medium carb food and test again - keep testing this evening to make sure he's in safe numbers before you go to bed - if you need to sleep, set an alarm to get up and check on him in a couple of hours - yep, not my favorite thing to do either...but you want to make sure he's safe before you call it a night.
Sound like a plan?