MILK OPTIONS PLEASE HELP

Sasa • I am 29 married my soulmate on May 3 2014 I have a 2 years old toddler boy and we are expecting are 2nd baby in May
My son is about to be 9 months in a few days and I'm trying to slowly wean him off of breastmilk. I wanted to know any other options for milk out there I can give him besides cows milk. Also have you all started giving your baby other milks and how is it going? Please help