I found week 6 not too bad, even R3 was ok. Just completed W7R1 and had to constantly tell myself not to give up. I found that a mental battle even though I have completed the same 25 mins in my previous run. Between 15 and 20 mins was the worst, after 20 mins felt a bit better until the 'up the pace' last minute.!!
Hope the rest of this weeks runs are ok