That is quite a swing from 253 to 80 in an hr. Of course you have to consider what he ate..was it a high carb dinner? I don't know how long your Dr. wants you to monitor him but I would take a morning fasting and then another 2 hrs. after his biggest meal and also a reading before bed. Seems his numbers are all over the place. If you see a very high reading..think about what he ate and see if there is a connection. There just might be something that is sending his readings up at times.
Best of wishes, and keep us posted....JJ...
