I'm really struggling with Week 7. It was interrupted because of travel and ever since i've come back, I'm done the week 7 run 5 times because i'm able to do in one day and the the next run I'm not able to. I've feel too tired even before I've hit the middle mark. Then the next run i'm able to run 25 minutes but today my 5th run, i couldn't. Felt too tired. I'm wondering if i should move on to w8 or hold on to W7 till i feel confident? Any advice? Thanks!