C.K.
Hello K.,
As a nutritionist who has not given her three (breastfed) babies cow's milk at all, I would just caution you to watch for the protein content in "alternative" milks- if you are still considering these options.
I have one child who doesn't drink milk at all; one who finally at 10 yo prefers cow's milk and has it occasionally; and one 18month old who loves milk and is drinking combinations of goat milk, soy milk and oat milk.
All the best
Caitlin