Weening and whole milk

Ileia

I'm currently 18 weeks pregnant and my 18 month old still nurses I want to ween her before the baby comes and get her on whole milk. She won't drink the whole milk though I even tried putting chocolate in it. How did you get your little ones to drink whole milk ? She eats her oatmeal ever morning and I make it with whole milk but that's about as much as she gets