Formula help

…I’m trying to think of creative ways to carry formula. My daughters almost one so I’m hoping this issue would be solved soon. She was only able to keep down the ready to feed Enfamil AR formula. So you can only imagine how heavy diaper bag is! Just wonder if you’re a mom who also has to carry around a bunch of little ready to feed bottles do you carry separate bags? Any ideas would be helpful! I’m asking so late in age lol but now with my kids in so many activities it’s been so much to carry it all around along with over diaper bag needs.

….This was my first formula baby. So now sure how easy switching to cow milk happens at 12 months. For those who chose formula was it easy to switch? Did you still use formula for a few months after?