How to solve diarrhea 11 months baby

Hii mummies I’m worried that my baby suffering diarrhea for 3 day …until he suffering without energi..selepas minum susu terus cirit-birit. Sampai anak saya tiada tenaga. Berturut-turut 3 hari #advicepls #pleasehelp #firstbaby #firstmom