I just wait for mothers to speak up. If there is a delay, catching someone's eye usually signals them to speak. Using props or gimmicks at a Series Meeting may help draw out shy mothers, especially in a round-robin meeting. Some mothers, however, may see a prop meeting as less serious. They tended to be most comfortable with information that was presented seriously in a lecture or discussion format.
Flexibility is key to meeting planning.
When only two mothers are present, it seems silly to present a formally laid out meeting, particularly when it was designed with new or expectant mothers in mind and the mothers in attendance are on their second or third child. Some Leaders noted that they encourage mothers to ask their questions early in the meeting. If the questions just need a short answer, I do answer them right then and there. Then we jump to the meeting topic of the day. In my opinion, meeting the needs of those who attend the meeting is far more important than following a set format.