FTM - need advice for pumping!

Hi ladies,

I'm going away to a wedding on September 1st and will be back the next morning. I'm leaving in the afternoon around 2pm and planning to be back at around 11am ideally. I exclusively breastfeed and only pump if I know I'm going out that day and my husband or MIL is watching my son.

I don't have much experience with pumping as I've only really done it when I need to. Unfortunately I don't have a stash built up, I wish I did.

If I do pump, I usually do it in the mornings as I wake up engorged and pump one side and my son feeds on the other. This gets me about 4-5 oz which is one bottle for him.

I'm looking for advice on how to build my stash for the night I won't be home. I will be pumping while I'm away but have NO clue how much I should have for him when I'm gone.

Ideally I just need some tips on when is the best time to pump, how to store it and how much I need!

Any help or advice would be much appreciated!❤