Babies feeding habits worrying me.

Okay so I was just wondering if anyone else has experienced this or if I'm just overreacting. I've been a little nervous about my babies eating habits. He's going to be 2 months on Tuesday and still eats about 2 oz at the most. There's been only a few occasions where he ate 3 oz. It's not just that because I know some babies are just small eaters. The past few nights and days he's been going longer without needing to feed, like 4-5 hours. Mainly at night he goes the longest but during the day he sometimes does too, but he still only eats 2 oz at the most. I thought that when babies start to go longer they usually eat more? I'm so afraid something is wrong and I can't figure it out. It's driving me up the wall.