Sleepy newborn

My daughter was born oct 5 , two weeks early due to placenta problems .. she was 7lbs and compared to my first which was 9.10lbs she’s small lol .. so my son was a big cry baby it was so hard with him , my daughter is sooo easy but should I be worried that she sleeps most of the day ?? She wakes eats and right back to sleep she’s not up for long before she doses off 🤨 is that normal ? Everyone says it is I am not sure