I was thinking if she wasn't pumping there's no way those babies would be having that much milk.Definitely overfeeding them. Small babies do much better with little and often. Their tummies and digestive track are not mature for large quantities.
If you look at breastfeed babies they feed every couple of hours and take their fill over a full 24 hours. That's natural for them. But she seems to be prioritising schedule. Which some people favor.
I personally prefer to let babies eat intuitively to prevent overeating especially later in life. I decided that as an obese Mum I don't want my kids to develop an overeating problem like me. Lisa hasn't considered that yet. She wants to sleep...
I know we don't see all in a few minutes worth of stories on Instagram but it seems like they're just fed and put down again, for babies that were wanted so much she doesn't show much cuddling or taking them in, soaking up the newborn weeks.