Sirius would really like to give Prongs a smack for being smug, but since he was holding a restless and unhappy little boy, he didn't, just shot him a glare and then half jumped to his feet when someone knocked, on edge and restless with it.
He was already up and James was sitting with Dylan, who stirred a little at the noise, so Sirius waved at Lily to sit and went to check the door. He pulled it wide when he was it was Remus, letting him in with a grimace. He still looked wired and stressed, but the abject panic had calmed when Dylan quieted down. "He's in the other room," he told Remus, assuming he'd read already.