How much is your little one eating?

My baby was born July 16 so 6 weeks from the day .. and she is such a hit or miss with eating ? during the day i’m lucky if she drinks 2.5 ounces in a feeding and then other times she will inhale 3.5 oz .. i just thought she would be drinking more at this rate she is formula feed but i’m just curious what your littles are eating ?