Try to work in one pumping session each day, between normal feeding times during the day when you might normally pump at work. (pumpables.co)
For older babies, weaning strategies might include: distractions at normal feeding times, substitutions with other foods, shortened nursing sessions, and don't offer don't refuse. (health-and-parenting.com)
Also if you are going to be missing a normal feeding time when away from baby, be sure to pump so that you are able to maintain your supply. (lansinoh.com)