3 Week old sleeping less then before?

CJ • 👼👼👶 🌈

The first two week after we brought our girl home she slept like an angel. 2 hour naps followed by an hour of wake time all throughout the day. Then went down for bed around 9 and slept 3-4 hours, woke up and ate and went back down for another 3-4 hours. Now recently she’s been up at night every hour eating only a small amount and going back to sleep and the pattern repeats all night. Also struggling to get her to nap during the day. It’s like she’s going backwards. 😩She hasn’t pooped since mid day yesterday and I’ve given her gas drops but it doesn’t seem to make much of a difference. I know frequent waking is normal for newborns, I’m just worried cause she was doing so good and all of a sudden isn’t. Hoping she’s not sick or constipated.