Night away from breastfed 6 month old

I’m currently 1 month postpartum and exclusively breastfeeding my baby boy. He does take 1 bottle of expressed breast milk per day from his Daddy. I am having anxiety because a bachelorette party for one of my best friends will take place when my baby is 6 months old. It will be a weekend event so I will be away for 2 nights 5 hours away. Baby would be with my husband for the weekend. I have no idea what to expect of this and am so intimidated by it. What could this trip do to my supply? Is 6 months too young to leave overnight? When did you all leave your babies for the first time, and any advice??

If I still feel this way in 5 months when the time comes I will have to opt out of the trip all together.😓