How many times do you burp your baby while nursing?

Alyssa
I'm a FTM and my daughter is almost 4 weeks and is a loooong nurser. She sucks basically the whole time, but will sometimes nurse up to 45 minutes. My mom and aunt suggested I burp her every 10 minutes, however I sometimes find she's so worked up from still needing to nurse that she won't let one go. She swallows them back down. Sometimes she does burp fine. Just wondering what other moms are doing!