In fact, the good news are over.
at 2.30, as I wrote, 2 hours after my lunch, the BG was down to 6.1. However, at 3pm I ate a medium sized, rather sweet apple. 1 hour later, I had 11.2! After two hours, I was down to 7.7. I expect it will go down into the 5s by dinner-time, helped by the jog...