Is six day old eating enough?

Haley

He seems to always fall right to sleep at about the five minute mark. I try to wake him but he is usually completely out! He was only 5 lbs 9oz at 39weeks so I am freaking out.😭 I know this isn't nearly enough. And he seems to wake up about every hour searching for boobie again 😭😭😭 I am exhausted.