We are preparing to take a long haul trip trip to New Zealand (for a family visit) with our baby who will be 7 months old by then. Slightly terrified by this prospect so would appreciate any tips on how to deal with formula feeding on the trip there and back with no opportunity to sterilise bottles along the way. The door to door travel time will be around 40 hrs (getting to Heathrow, check-in, two long haul flights, one or two domestic flights, transits between flights etc). If we take enough bottles and pre-made formula for the trip plus a bit extra that's going to take up a lot of hand luggage space. Guess there is no other otpion. I assume pre-made formula is easier while travelling but we may have to deal with milk powder on the way back as pre-made formula is not used in New Zealand unless we bring enough for the way back as well.
Would you try to bring enough normal milk for the whole trip or just buy baby formula in New Zealand? We use Kendamil which is not available there. Usually the powder at home and pre-made while out and about. Don't want to upset here stomach by frequently changing milk but it will be pretty heavy to take enough milk with us.
Any tips on how to deal with formula feeding on very long trips would be much appreciated!