Almost 5 month old eating 35 ounces per day

Hi, I’m reading online that a baby shouldn’t consume more the 32 ounces of formula per day and I’m concerned because my baby eats between 30-35 per day.

She’s on the lower end of the growth chart (29th percentile) so I’m assuming this is okay, but I’m also reading that maybe she should start solids? So confused because I thought they couldn’t start them until 6 months. Her next appointment isn’t until July 5th so I’m not sure what to do. Any advice???