My baby is on adult sleeping pattern

Hi Mga Mamsh! First time Mom here. My baby is 2 days old. And I am confused as most people told me that I won't be getting much sleep once my baby is born. However, my baby sleep continuous for 5-6 hours without any interruption. Then awake for 1-2 hours for playtime,milk and diaper change. Hindi rin po sya humihingi ng milk and is super behaved during sleep time. I get scared that she will be dehydrated. Normal lang po ba yun na lagi syang tulog? Thanks in advance.