Baby seems unsatisfied after 45 min feeding - what to do?

cecilyandgautam

Last couple days, my 3 week old daughter has really upped the feeding frequency - ever 3-4 hours at night and 1.5-3 hours during the day, for up to 50 minutes at a time and half the time, she still seems hungry after. I expressed a little to make sure I'm still making milk she can easily get and I seem to be making a good amount. What gives? She acts like she's starving even though she's eating a lot. Should I start eating more? Will that help? I hate seeing her little sad face when she's unsatisfied