Pumping mama's?

I need to create an overnight stash for when my husband and I are away for the night at a friend's wedding. We are leaving on September 1st around 1pm and will be back the next day at around 9am.

Do I have enough time to create a stash for my LO while I'm gone?

I'm worried I'm running out of time. I do not have any milk saved or stored away. I wish I created a stash early on.

Any advice on how to create a stash fast and how much?

Thanks in advance ❤