I run her bottle under warm water to warm it up from refrigerator temp cold. I haven't tried just doing cold either.
I use the tommee tippee closer to nature travel bottle warmer. It's essentially a thermos with a big enough cup to fit any bottle in. Just boil some water before you leave and it stays hot for hours.
If she’s going to be taking a bottle within 2 hours I warm it and put it in a thermos. Any longer and we will bring cold milk and stop at a gas station to warm it up
Are you doing the above with cows milk or formula?
I gave my daughter straight cold formula from the beginning so I wouldn’t have to worry about warming it when we travel, etc. it was recommended by my cousin and the best thing I did. We like to travel so she also gets room temp bottles. We never did warm milk
Incognito I did it with breastmilk and now Ripple
I let it warm in the Sun or I’ll ask for a cup of hot water. I’m trying to get her use to cold milk but she likes what she likes 🤦🏾♀️