Yeah, completed W7R2, but I found it more difficult than the Run 1. Then I realized that I didn't take the extra day off between Week 6 and Week 7. So it was my third consecutive 25 mins run this week. I plan to reward myself and take the extra day off now.. So W7R3 has to wait for two days before it is conquered!
In the meanwhile, I had posted a question last week on the upper back pain that I had on longer runs. It looks like I could be running with tightened shoulder muscles as well as having a weak core muscles I decided to consciously relax my shoulder muscles while running - that seems to have helped a bit. I also plan to start the NHS strength and flex program in parallel as per a suggestion from con-brio. So it will be alternate days of Couchto5k and Strength and flex. I am keen to hear from others who have had similar upper back pain (pain start from the middle of the spine all the way to the shoulders).
Will keep everyone posted on this.