Dr. Sharan Patil said the girl was out of the respirator she had been placed in after the surgery, and had begun eating solid food.
"She is coping very well and she is stable," Patil said.
Wrapped in bandages and carried by her father, two-year-old Lakshmi made her first public appearance at a news conference on Tuesday.
The girl was born attached to a parasitic twin, which ceased developing in the mother's womb. The surviving foetus absorbed the limbs, kidneys and other body parts of the twin.
Doctors removed the extra limbs, transplanted a kidney from the twin and rebuilt Lakshmi's pelvic ring at a hospital in the southern city of Bangalore last Wednesday.
Patil said the girl was still very weak and the wounds from her surgery were yet to heal, adding that she would be carefully monitored. He also said that even her parents had restricted access to Lakshmi, who was vulnerable to infection at the moment.
The chief surgeon earlier said the girl's legs, which jutted out awkwardly from her body, had been "moved down," Lakshmi faces more minor orthopedic surgery in the coming months before she can be taught to walk.
Lakshmi was named after the four-armed Hindu goddess of wealth, fortune, love and beauty.
