In May I have to go on an overnight trip for work. My baby will be 5 months old. I'm still breastfeeding/pumping at work. If you had to do this, how the hell did you manage it??

I'm in sales and will be meeting with a potential customer.

How do I explain I need a break every 3-4 hours to pump?

How do you plan for the amount of milk needed while you are gone? My baby wakes up 1-4 times a night, depending on the night.

How do you plan for flights? I'll be traveling for 5+ hours each way so I'll need to pump while traveling.

I DO NOT want to quit breastfeeding just because work is an inconvenience. I also don't want my supply to tank for the same reason.