5 week old will sleep through the night, but won't nap during day

Sarah

My 5 week old barely sleeps during the day. When I get her to pass out during the day, I will try to move her to rock n play but then she wakes up and it's a never ending cycle. If I keep her in my arms she will stay asleep. But what's strange is I guess if she's tired enough she is fine to sleep in her rock n play. She went to bed at 9 and up at 430! I'm just confused! I feel like my baby gets very stimulated and loved looking around and is a light sleeper. Could it be that it's quieter and darker at night so she's able to fully sleep? It's never super dark in our room during the day when I try to put her in it but I do use sound machine..

Not complaining but I feel my baby should definitely be getting more sleep during the day. Is it possible some babies don't need as much sleep?