over feeding?

A lady I know just told me I'm probably over feeding my baby. He's always been right on track with weight and he is a big baby but that's just because he is long. He is definitely not fat. He was spacing his feelings further apart but now he is wanting them closer together and seems to want more. I just assumed it was a growth spurt but she told me he's over eating?? He eats 5 oz every 3-4 hours but right now sometimes 2 hours apart. I increased him to see how he'd do but he seems to do better with 5. What do y'all think? Overfeeding?