Vacation

So my in-laws want to go on a week long vacation come April, my baby will be 7 months old come April (this is my first, so lots of mom anxiety here lol) but so far I’ve been able to breastfeed and pump and give him a bottle or two a day and I hope my milk supply keeps up until he’s one year. And I’m worried about how I’m going to manage this. How do you pack everything you need for a baby when your flying? We went on a two day trip and filled a pickup lol. How do you pump on a vacation and keep the milk good and how do you get it back with you when your flying? I don’t want to have to stop breastfeeding early because a vacation dried me up 😩