For those formula feeding, how old is LO and how much per feeding is your baby eating?

Sandy

After LO lost 12% body weight by his first dr appt we found out I can’t produce milk beyond colustrum so we started him on formula. Our dr said he should eat 1.5-2 ounces every 2-3 hours. It’s been a few days and it seems like he is now interested in more than 2 ounces per feed. Is that normal? Can his stomach even fit that much a time?