My vegan partner and I have different dietary priorities for our daughter

Hi ya’ll fellow new parents. Our daughter is just about one year old! My partner is long time (20+ years) vegan. I have never been vegan, but just naturally adjusted to a vegan diet for the most part because of what we keep in the house. I am not militant about this, and enjoy sushi and even the occasional burger. I met with a nutritionist the other week while getting food benefits for our daughter (I am recently unemployed.) She advised giving our daughter whole milk now that she will not be having breastmilk and formula. I knew what my partner would say, so I asked about milk alternatives and the fact that they have the vitamin D, etc. The nutritionist advised me that it’s not about the vitamins, but the fat content. I told my partner that I don’t want to stress about her getting the fat content elsewhere, and that we could revisit the conversation when she is 2. He was really upset and vented about the “outdated” guidelines. So, for the vegan parents, or those blended dietary families - what did you find to be true? TIA!!