Three scoops? Regular American scoops? Blech! To much ice cream. My answer is in a cup. Or, take two scoops and put them in a container and store them in the fridge and eat one scoop on the cone for now.
Have a big bowl and spoon handy while you eat it. When it starts to fall, put it in the bowl and carry on with your spoon. If you’ve got a friend, give them a spoon too!