How long to nurse ?

KK • A busy momma of 4 👶🏼. who works hard 💉. Is a travel feen. loves ☕️ , 💪🏼 🏋🏼‍♀️and her 2 😻. While loosing sleep to spend endless hours on glow. 💁🏼‍♀️

How long does it take for everyone's babies to nurse? My mom thinks I don't nurse my daughter long enough, even though I let her stop on her own, ands she gaining weight fine. She nurses for about 5 mins on each breast every 2 hours.