So I went out yesterday to do w2r3 after having struggled with runs 1 & 2 this week.
I only managed to do 2 full runs and 3 shorter runs and couldn't manage the final run. I kept a sort of brisk walk.
I'm thinking perhaps I should repeat run 3 again before moving onto week 3 and then deciding if I'll need to do another week 2 or move on.
I'm not disappointed be a use I've made it to week 2 so far and I won't give up even if I have to repeat every week along the way.