Is this normal? Infant sleep

My baby just turned 6 weeks old. I know infant sleep is pretty disorganized but curious what’s normal and to be expected versus what we can influence. Usually baby will have a couple naps between 3pm-7pm. In the evenings, from 8pm-12am, when she’s with my partner, sometimes she’ll mostly sleep and just wake to feed. Other times, she’s awake and eating (combo of breast milk and formula by bottle) on and off the entire time, except for maybe a 20 minute nap. She will only finally settle when I wake up and then breastfeed her sometime between 12am-1am. Is this period of being so awake at times normal or are we doing something unknowingly to contribute to it? Are there ways that could help her sleep?