Easy.... Focus on repairing radio and making medicine first. Then never have more than a days worth of rations on site; and just regulate the fire, sending marvin out for food (not the soldier), group therapy, and talking to the people helps. They can survive a few days without food. constantly check to see if anyone is sick. once I had 9 meds, the doctor died, but i didnt need more than 4 of them to survive...