Today's workout will be a tough one, but you can do it! Remember that all the work you're putting in this week is helping you create good habits. If you can get through six days of hard work this week, then you can definitely continue all the way through the next 12 weeks and beyond.
If you're in a rush or feeling really good, it might be difficult to rest the entire two minutes. It's really important, though, to give your body a break so you have enough energy to hit the next set with just as much intensity as you did the one before.
If you're taking less rest and are flying through the workout, then chances are you're not using challenging enough weight.