Advice for sleepy nurser

Hi, I am a FTM to a just about week old baby girl. We have struggled with breastfeeding from the start, I was an emergency c section and she was whisked off to NICU right away. We have both come so far from where we started and are getting a decent(mostly) latch each time I try to nurse her but she will only actively nurse for 5 or so minutes on each breast before she falls asleep. We are doing triple feeding right now (UHG) so we can get her back to birth weight per pediatricians recommendation so I know she is getting enough to eat for now. Does anyone have any advice to get her to nurse longer? Or am I just waiting until she isn't such a sleepy newborn? Thanks for reading 💜