Do I wake to feed or pump?

My 8 week old was consistently waking every 3-4 hours to feed. Over the past few nights she’s been doing longer stretches and I’ve been waking her at the 5-6 hour mark for a feed. I have no idea how long she’d go if I left her! Her weight gain was good at our recent check up, she’s been consistently at the 75th percentile since birth. With my first born, my breastfeeding journey came to an end after I got postpartum sepsis at day 10 and ended up in ICU. Therefore, I have a lot of paranoia around getting an infection or mastitis. This is my main reason behind waking her. For anyone whose little ones started to sleep longer, do you pump at night instead? Or do I gradually phase what time I wake her? Not sure what to do!