Final answer:
In a conscious infant who is choking, you would first give 5 back slaps followed by the Heimlich maneuver if needed.
Step-by-step explanation:
If an infant is choking, turning the baby upside down and giving 5 back slaps may dislodge the obstructing object. However, if the initial back slaps do not work, the next step would be to perform the Heimlich maneuver on the infant. You can find instructional videos online to learn how to perform the Heimlich maneuver correctly.