Sounds like you're doing great, Wench! How's the swimming going? Running on the treadmill for 9 minutes is really good! It takes a while to build up your stamina. Like I mentioned before, running and then walking is fine too. My running mags stress that a lot.
I've had to adjust my running some because of my chemo so I've been running until I can't run anymore, then walk for a minute, then run again, and so on. It really makes a difference and helps you to not be overwhelmed by the thought of "I can't run another step so I'm going to stop."