Uneven Milk 🐄

Krystine
I feed my baby girl off one breast every two hours switching back and forth between the two. She is 3 weeks old and this is working well. At night though I pump and my husband gives her a bottle so we can get back to sleep quicker. It seems though that one breast produces a whole lot more than the other one. I will pump 5-6 ounces from one and only 2-3 from the other. Is this normal? What can I do to even out milk production?