Not eating enough?

I've seen a lot of people saying their 7 month old eats 6-8 oz each bottle in addition to baby food. My daughter eats about 4 bottles a day, 4 oz each bottle and 4 oz of baby food altogether. She's hitting all of her milestones correctly, I think a little soon. She can crawl and sit up and can even stand and walk with support. She weighs about 13-14 lbs. She was previously breastfed to 3 months, and then supplemented to 6 months, and now exclusively formula fed. Would this be considered normal? Won't be in to see the pediatrician for a week or so and I wanted to see if anyone else was experiencing this