Cows milk 🐄

Ok so I see a lot of post about switching over and I have seen a lot of questions. I've got 4 kids and one on the way. My daughter is the only one who's been picky about certain things. My 3 oldest boys transitioned to milk fine no problem first time go. Took the sippy cups drank everything fine. Not my daughter lol. She still won't take a sippy and until today had only liked chocolate milk. I got to thinking though. She hates cold things. So I let a bottle of 2% sit out just a lil while.... She's sucking it down like there's no tomorrow! So if there's anyone having trouble maybe try letting it warm up a little first. I hope this helps someone.