Okay. So first we have to know if his numbers are sure headed up, not down. Our general threshold for not giving a shot is 200, for new diabetics. We suggest waiting 20 minutes, without feeding, and test again.
If he hasn't eaten since the test, can you get another number? If he is over 200, I would be cautious and give .5 units (half of the one unit amount). Will you be around today and can you get some more tests in? That will really help us see how the insulin is working and help us give dose advice. If he is still going down from the 180, you will want to skip a shot.
BTW, you can take off the 911. Roy and his Mom are doing great!