Am I over feeding my baby?

Am I️ over feeding my baby? My 11 week old drinks 4-6 oz (usually 6 or 5 1/2) every 3- 3 1/2 hours. At her last check up (around 8weeks) she was 12 pounds 9 1/2 ounces. She was born weighing 8 pounds 1 ounce. My doctor said nothing about her weight but that “she loves her food”. She didn’t even ask how much I️ was feeding her. My baby girl sleeps some nights 7 hours and others 10 hours. I️ know when she doesn’t want more and I’ll stop but Is she still getting too much? Also I’ve noticed that when I️ change her diaper before every feeding, it’s not as full as they used to be. Is that a sign something’s wrong? They are always wet, just not as full.