Having got to the end of week 7, at the start of December I got sick (feels like sea sickness, ENT appointment tomorrow to try to get to the bottom of it). Although I've managed to keep going out for walks, I've only managed 2 runs in that time, and overdid the most recent one last week - ended up having to lie down for half an hour before I felt stable enough to manage a shower.
So today I tried again using w5r3, and it was just right. Weather is good - cold but sunny but above freezing. Used a nice "safe route" - basically a circle that means I'm never more than a 10 minute walk from my house and is mostly in a park with lots of benches (in case I needed to set down and recover). Although I felt a little woozy by the end it was OK, so I'm going to repeat weeks 6 and 7 and the I hope finish the programme !