Bring freshly expressed breastmilk for the next feed then whichever amount of bottles u need in a cooler bag. I also bring hot water in a thermal flask and an empty bowl/cup. The 1st feed, use the freshly expressed milk. The subsequent feed warm the milk in the bowl or cup. You can mix the hot water with tap water outside to warm the milk as it's not good to use too hot water to warm milk.
Read more