Newborn advice- single first time mom- desperate .

My baby is 5 days old. And I feed him every 3 hrs and he eats this whole bottle. Lately he’s been wanting to eat a lot more. Maybe every hour in a half-two hours now. I know he’s hungry but I’m scared of overfeeding him. I burp him after every meal. He poops fine. He’s just hungry a lot sooner than every 3 hours.

Any advice on what I should do? I’m a first time mom alone. I don’t have any friends or family.