I completed week 5 day 2 this morning. Found the jump from 5 minutes to 8 minutes running a bit of a leap, (although I found 90 seconds to three minutes tougher).
I've now had a look at what I'll have to do for day 3 and it's 20 minutes straight running. That seems quite a jump as it's over twice as long as I've run (certainly more than I've done for 25 years).
Did anybody else find this tough?