Latching or lactation problem?

Rainey • 27 and pregnant with our first!

When I breastfeed my daughter will suck for 45 minutes then wake up 15 minutes later acting like she is hungry. She will be 3 weeks old tomorrow and I’m just worried she isn’t getting enough milk when I BF. When I pump and give her a bottle she is done in 10 minutes then will sleep soundly until the next feeding. Is this a latching or lactation problem? Any advice on how to fix it?