Any tips on weaning a baby from breastfeeding and getting them on a cup?

I read this article a while back, I haven't tried it myself but it seemed to do the trick for her :)

I Weaned My Daughter With Vinegar https://www.romper.com/p/i-tried-weaning-my-daughter-with-vinegar-tbh-it-worked-like-a-charm-29050/amp

I wonder how well that would work. My son is 9 months on the 5th