Hi, I have a question. I will always expressed my BM and store all in a fridge. I was wondering if i go out w my baby,do i bring few packet from e fridge store in a cooler bag? Where do i heat e milk up? OR Do i have to give formula when im Out cause mu baby dun latch. I can pump milk and use within 4-6hrs room temp but if one time i put out 3packet all i have to use within 4-6hrs and my baby drinks every 3hrly afraid that e expressed milk Will be wasted. Quite confused. Pls advice me Thank you