Further to my response to you a few days ago, you need to use a modicum of intelligence.
If your blood sugar level is higher than the 'normal' range, you do NOT need to eat after your last injection of the day.
Although CarolOklaNola is correct in what she says about dying from low blood sugar, she is missing the point. Your last injection of the day would be a long-acting insulin, which would not normally lower blood sugar levels so drastically. It's designed to work over an extended period of time ... anywhere from 16 to 30 hours. This is called a basal insulin, that would come under many different names.
How long have you actually been diagnosed as a diabetic, my friend? I ask as you SHOULD have been given contact details of members of your diabetes support team ... doctor/endocrinologist, diabetes specialist nurse, certified diabetes educator, dietitian, etc. ... who you SHOULD be able to contact out of hours. They SHOULD also ensure that you are given appropriate training on what to do if your blood sugar levels are higher, or lower, than they should be. i.e. what to do when these events occur, and whether you should be eating if your blood sugar level is higher than it should be.
It appears that I've upset some clowns who know very little, if anything, about diabetes. I pity their lack of intelligence and willingness to learn.