Moms, whose children don't sleep?! My daughter is 40 days old and basi…

Moms, whose children don't sleep?! My daughter is 40 days old and basically doesn't sleep during the day at all.... ? I also have a 2-year-old son, he's very noisy — do you think she doesn't sleep because of him?! How is it for you?! She makes some noises and wants to be held, but I wouldn't say anything's bothering her, she doesn't cry, seems fine.