Seeking dairy-free breast milk for baby boy

Description

My adopted child is on donated breast milk since he was 5-weeks old. He had been receiving the milk from a vegan donor. However, recently, our original donor stopped producing milk. Unknowingly we switched to another milk supplier and found that our baby was extremely jumpy and restless and cried a lot. I deduced that our child is lactose-intolerant.
Therefore I am looking for strictly vegetarian donor in Nashville, Tennessee to meet my baby’s requirements. Thanks.