Weaning help

Ok so I’ve been slowing weaning (regrettably) my now 5 month old baby. He nurses mostly at night and gets formula during the day. I’m going to be starting school in two weeks and pumping isn’t an option (tried it and it didn’t go as I hoped). Well next week (the 15th) I’m flying to California for 5 days and l have to leave my baby at home. Since I’m flying I can’t necessarily pump and freeze milk (not really an option). What should I do? What would be the best option? No baby, no pumping, out of town for 5 days.

Editing because of the comments

I’m trying to figure out what to do about not pumping as I am planning on not pumping because I might be able to at the airport but not really the rest of the time I’m in California. It’s not really an option for me.