Should I?

Myself and 2 other coworkers will have very young babies at the beginning of the school year....mine will be 3 months, another will come back when hers is 3 months (sept) and the last will go out at the end of aug and come back in Nov... I plan to talk to my principal about pumping and logistics of it. (Principal is male). Should I contact the other two teachers and ask them if they’d like to attend the meeting? Is it inappropriate for me to ask? I don’t want them to have any negative feelings toward me. I know the way babies are fed can be a touchy subject.