Hi, bit of a niche question here but we are camping with our 14mo old this summer for 4-5 days and she is still enjoying a couple of bottles of Koko coconut milk in the morning/evenings. Wondering how to store this whilst away, as although the cartons we buy are long life, once opened they are supposed to be refrigerated (won’t be able to do this whilst camping). Do you think the cartons would last a day opened without spoiling? I don’t want to waste milk as the other alternative seems to be opening a new carton for every feed & I can’t find smaller carton options. Thanks so much!