Pumping at work

So I go back to work in 2 days and I’m freaking out and don’t feel ready at all.

I will be pumping at work and have no idea what the process will be like?

I work 8hrs in the day, does pumping ~3 times sound about right? And how long am I technically allowed for each pumping break? Some days I pump well and it goes fast and other days it takes me like 20 min to get 3-4oz. I’m worried ppl are going to start getting annoyed with me leaving often?

Also, I will be using the Kiinde twist system (where u pump directly into bags). Since I’m pumping multiple times in a day, do I need to clean the flanges/parts? What do u guys do?

After I pump do I keep them in the cooler with ice pack in the fridge? Or just in the cooler but not in fridge?

Any tips are welcome 😱😱