Newborn Constipation

Am

My son is 1 week and 1 day old. Up until today, he was pooping around 6-7 times a day without issue. However, his last poop was yesterday at 6 pm. He’s passed some gas since then but that’s it. Does it sound like he’s constipated? Is there anything I can do to help?

I know babies can go a day or two without pooping, I’m just concerned because he was pooping so much and now nothing.