Anyone else make milkshakes instead of milk?? ? Sawyer is in the 90th percentile for weight. He's…

Anyone else make milkshakes instead of milk?? ? Sawyer is in the 90th percentile for weight. He's never had any formula and I know you can't overfeed a breastfed baby but wowza! He gained 4 lbs in one month! My pediatrician said it's great for his brain and eye development to gain so much but still teased me that I've been feeding him cheeseburgers and fries. ? I guess most babies only gain 1 lb a month instead of 4. ??