My daughter’s birthday is next week and I still have an unopened large can of formula. I figure she’ll finish it and hopefully I won’t have to buy anymore. Her father is one of those people who drinks a lot of dairy milk, so I’m not too worried she’ll have digestive issues. Do you switch to all cows milk right away? Do you carry a cooler bag of milk bottles with you when you go out, or do you stick to solid food on outings?