am I over feeding?

Jackie • Mother of boys 💙 Instagram - @boy_mum_ • follow for meal and snack ideas 💡 ☺️
So my baby is 5 days old and drinking 3-4oz of formula every 3 hours! Is this normal? I feel like he's having a lot. I don't want him to go hungry but I don't want to over feed. He's not really a sicky baby either, just a few spit ups here and there. He weighed 8lb11oz at birth and now weighing 8lb15oz