6 week old breastfeeding

I'm wondering how long you girls breastfeed for, my husband thinks I'm not doing it long enough, our son falls asleep happy and not crying after 30 minutes of feeding, am I not feeding him long enough? It's not just my husband saying it, it's also my family and friends too ☹️ I'm new to breastfeeding and I like to think I'm doing fine and that my son is being feed just fine