The mother of a 2-week-old infant tells the nurse that she thinks he is sleeping too much. What is the most appropriate nursing response to this mother?

“Tell me how many hours per day your baby sleeps."

"Newborns generally sleep 12 to 15 hours per day."

"It is normal for newborns to sleep most of the day."

"You will find as the baby gets older, he sleeps less."