My baby has 9 days and I need to wake him up to suck ...

My baby has 9 days, normal stool and urine too, moving normally raises the neck normally, has no fever more sleep without stopping I need to wake him every 4 hours to nurse, then he sucks a lot, empties the breasts. Should I worry about my baby's exaggerated sleep? thanks.
Expert answer:

Some babies are more lazy and take many hours to wake up, needing to be awake, as is the case with your child, without this meaning something wrong (sickness), but it may have some meaning, keep waking him to suck and as soon as if possible take him to the pediatrician.