What is the best action to relieve a responsive choking infant?

Do 5 back blows (Hitting on the infants back when they are face down between your legs angled downwards), and then 5 chest compressions (baby on its back on your legs that are together pushing down) with two fingers on the middle of the sternum (breastbone between the breast). Do this until the choking infant coughs up the object. You should only do this if you are trained and certified in CPR and First Aide.