6 week old sleep issues HELP

My girl is 6 weeks old and is a great baby. During the day, she only cries when she’s hungry and sleeps wonderfully but at night it’s like a switch flips. From about 11pm - 2 am she will grunt and squirm. She will only sleep in 10-30 min increments and usually only in my arms. She’s not hungry, I offer her a feed but she doesn’t want it.

Can someone help me? Mostly, does this sound normal or do I need to call her pedi? I’m desperate for sleep as my 2 year old gets me up at 5.