newborn baby and water?

Jai • A Fashion Stylists / Marketing Student who loves tacos 💕Ftm.
My child is three weeks. We're over my inlaws and they're trying to persuade me to give baby water w sugar for hiccups. I know new scientist's updates and experiments says its not okay. However it's a old wives thing and many people have done it for years. I still don't believe in doing it even though they are determined to. I've always done other remedies. Have Yall ever done this ? How did the baby react? Recommendations?