You cannot make cheese out of breast milk.  This lady tried because she had a lot of breast milk that was about to expire.

So why can’t you make make cheese out of breast milk?

It turned out that breast milk can not curdle, because the protein content is lower, and because the protein in breast milk is more easily digested compared to cow’s milk. That’s why, unmodified cow’s milk is unsuitable for babies. And on the other hand, adding acid to further ‘digest’ breastmilk protein won’t curdle the milk.