5 week old sleeping less/eating more

My 5 week old used to sleep 3-4 hours at a time, the past couple of days she has been what it feels like I’m on my breast 23 hours a day (not ready but a lot) and she’s only sleeping a span of 30 mins to an hour when she does, any thoughts or tips? Is my supply going low? It’s so hard to tell how much she’s getting strictly off the breast, she usually drinks 4-5 ounces when I pump