OK, I'll come clean. When I'd finished week 6, I studied the remaining three weeks, and realised they were mainly to gradually increase duration from 25 minutes to 30 minutes. And so next time, I tried a 30 minute run, successfully. Since then I've done three more, and intend to continue doing them until my distance covered improves somewhat. I'm still only covering 2.5 or 2.6 miles in my 30 minutes, and that's on the flat. I believe I could do 5k, which is only 3.1 miles, but I won't attempt that for another week or so.
Now, can I apply for my graduation badge next week when I've done two or three more 30 minute runs, or will I be considered a cheat for jumping over weeks 7 and 8?