1 year old refuses her milk all of a sudden

She’s been doing fine with her regular milk, I transitioned her to it around 2 months ago but she doesn’t want it anymore. She has 0 interest for it now. I tried giving her almond milk and she turned her whole body away from the sippy cup without tasting it. I tried giving her the regular milk with a little bit of nesquik like her pediatrician told me to and she spit out the milk. I even tried giving it to her in her regular bottles instead of her sippy and she still didn’t want it. I dont know what else to do!!