Can share how do you all wash your breastpump parts at work? I need to pump 2-3 times at work so I need to know what is the easiest washing steps. Can I rinse with hot water after each session and let it air dry, and take out for pumping again next session without washing it thoroughly?

You could also consider investing in a uv sterilizer that doesn't require any washing or drying. The units are a little bulky but they can probably be hidden away under your desk. They're also about 2-3x the price of an electric steam sterilizer but for the ease and convenience at work, it sounds amazing. And probably better (and cheaper) than investing in a 2nd pump just for work. This blog is a good resource: http://mlbb.com.sg/into-the-world-of-uv-sterilizing/