Switching from bf to almond milk cause diarrhea ?

We recently gave my 2 year old almond milk this Monday usually she drinks breast milk for her naps and bedtime but we’ve cut it out . Since Monday she’s refused the almond milk and still hasn’t had breast milk but she now has diarrhea or mucus looking poop (pic below) does anyone know if this could be a cause of the almond milk ? She refuses to drink cows milk . The past 2 days she also hasn’t been wanting to eat as much . I’m not sure what to do . She doesn’t have a fever she’s acting like her regular self aside from the diarrhea .