How to train my 9 months old to drink from a cup? Or is it too early to train ?

Babies also love to copy their parents, especially when it comes to eating (which is why babies often grab food from mom's plate!). During meals, use the sippy cup yourself  -- and if your partner and other adults at the table are willing, have them use the cups as well. Though you may feel a bit silly, your baby will likely want his own cup when he sees everyone enjoying this new "toy." Bear in mind, there is no magical age for babies to begin using sippy cups. The best you can do is offer it, have fun with it, and enjoy your child's own developmental timetable.