I feel like my baby never gets full while breastfeeding. He latches and will eat for like an hour straight on one side and then pull away and acts like he's still hungry so I'll put him on the other side and he will eat for another hour then pull away and I'll burp him but he's still fussy and acts hungry, so then I'll give him an once of what I've pumped and then he seems satisfied. Is it normal for him to be latched that long and still be hungry? I'm getting an once out of each side when I pump for like 30 min. He's 16 days old. TIA