I also similar to you. My son is 9 mouths la! The milk supply is become less and less even I keep pumping after trip. During the business trip, it is difficult to spare the time for pumping because my boss are coming with us and having meeting the whole day. The situation is very poor for me as even we having the lunch are also need to sit together at the conference room. The milk supply are suddently drop from 10-12oz to 3-6oz. I am also very unhappy ... :-(
I would like to quit/change the job but I am afraid no more milk after that and nothing can help ...