There are three choices, any of which would be OK. But be sure to pick one and stick with it - don't change your approach. You can place him in time out for 5 minutes (but do not start the time until he's quiet), you can send him to another room until he's finished with the
cryingColic and crying
Crying in infancy, or you can ignore the
cryingColic and crying
Crying in infancy entirely and go about your business.