Can my 15mo LO share with my newborn breastmilk?

Breastmilk adjusts to the kid's needs. A newborn would need different nutrients compared to a toddler. And our amazing bodies will adjust accordingly. That's why they say direct latching is best because that way the baby's body can transmit signals to the mother, letting her body know what nutrients to produce. Read about this woman who pumped milk for her baby and toddler and produced different looking breastmilk: https://www.google.com.ph/amp/www.popsugar.com/moms/Photo-Breast-Milk-Adapted-Each-Mom-Kids-43209419/amp