My baby is about to be 8 MO and i switched her bottle to a zippy cup she honestly did very good she got the hang of it on the 2nd to 3rd day. As of now is what she uses. But everyone around me keeps telling me why did you do that she's still a baby. Or you don't have to do it until shes alomost a year. Blah blah I'm getting annoyed. I'm a FTM and I'm still learning everyday.

But is it true should i have waited?