Water for baby

Hi! My babe and I are both sick with a cold and my mother in law keeps trying to get me to give the baby water but everything I’ve read says not to introduce water to the baby until they start solids around 6 months... I’ve told her this and she did the whole “well when I raised my kids blah blah blah..”

Just confirming that I’m not crazy and wanted to hear what you guys think! She’s formula fed so she’s getting plenty of liquids and is still eating just fine despite having a cold.