Breastfed baby still down 8 oz

sammy

Today at our weight check he went up 2 oz from last Thursday 7.2. He was born on April 25th at 7.10. I’m worried this weight gain was from a bottle I gave him about 1 hour before his appt. I changed his diaper right before the wt check because he peed and pooped. The doctor said the wt gain was great but I’m still worried.