Since yesterday afternoon, LO has been feeding (and giving hunger signals) every hour or so. He doesn't feed for very long - no longer than 10 minutes, and then is done regardless of whether I offer more. He normally only feeds for 10-15 minutes (he's what our pediatrician calls a "barracuda feeder") so his length of feeding isn't all that much different than before.
Is this cluster feeding? How long does it last and can I do anything to get him back to 2-3 hour feedings?
EDIT - LO is 13 days old