I have only done 1-2 at a time due to the amount of tokens it can take for the green rest packs, but my injuries are almost nothing as I tend to get them down to 20% before boosting the condition back up and carrying on from there.

Is this the right way to go about it, or am I not doing it quite right (Managed a 2 star increase in 3 days, form high 30 to 40 quality)?