How much does your newborn eat and sleep?

So I’m just confused about all of this. My baby lost almost a pound 24 hrs after birth so they advised me to breastfeed and then also give 1 ounce formula every feeding which they said is every 2-4 hours.

I have been doing that but it seems like he is breastfeeding literally every hour ???

He’s 8 days old.

Also it seems like he sleeps probably 20 hours a day? Idk maybe I’m wrong but he sleeps sooo much