there is nothing to say you need to give cows milk at all!!
how old is bubs??

you can keep on breastfeeding as long as you wish, but if you want to introduce something else, maybe looking into alternative such as rice or oat milk!

DD2 has oat milk on ceral etc.. and is still breastfed, she wont be having cows milk for some years yet, if at all, she did have it on ceral etc.. but was advised to take her off it