I'm looking for advice for making formula while on the go. I'll be traveling with my LO on a plane from LA to Pittsburgh. He is breast fed but I supplement with formula. During the flight he will need a bottle of formula. I have a powder formula dispenser, my question is in regards to the water. Do I sterilize the water and put it in sterile bottles until I'm ready to mix the formula. Do I just use regular bottled water? I'd appreciate any advice!