Advice please ://

My baby girl will be 3 weeks tomorrow, and at her check up the other day when I told the doctor she can’t eat up to 3/4 ounces at a time, she said I’m over feeding her. she’s on simulac (pro-sensitive) formula (I couldn’t produce for her sadly).. during the day she eats every hour unless she has a good nap than 2/3 hours. I told the doctor I’m not only giving her 2 ounces because she’s screaming/crying because she’s so hungry still.. am I doing wrong? I’m a first time mom & i feel bad ever since the doctor told me that..