How to label pumping schedule?

Hey, I'm pumping at work and even though most of my meetings are virtual I just don't like being distracted or stressed in a meeting while pumping. So, I've blocked off 30 minutes sessions on my public calendar. I labeled the sessions as "busy" but coworkers think this is just pre-meeting planning or focus time. I've already been interrupted once. What do you label your pump breaks as in your calendars? Just looking for something short and professional, avoiding something like "BRB PULLING ON MY NIPPLES TO MAKE BABY DRINKS". Another note, I work with mostly men, and because of the virtual nature, many don't even know I was recently pregnant. Partly because I started a new job after maternity leave.