4 week old sleeping more?

Eva

My son turned a month old on the 14 and i noticed this week he’s been sleeping more, is that normal ?

In the afternoon he takes a long nap rather than waking up often to feed. And then at night he seems to know when it’s nighttime 🤣 or am I crazy, because once we go to bed around 10-11 pm he sleeps and only literally wakes up to get a diaper change and feed and go back to sleep all night.