Mazel Tov and ignore Yenta questions or answer in a way that one will get the message to mind their own business.
There are certain people who want to know everything about others but don’t dare offer or answer any of themselves. When talking to such, i for example, when asked howmany children i have, the answer will be as many as Hashem gave us.
In listening to a lecture on such as Loshon Hora and Richilus, the speaker who had a sense of humor, in her English accent said,”Hashem gave you one nose and it belongs on your face,not in other peoples pots”. It is your choice to answer or not. When our son was engaged someone asked if he’ll put on long (meaning a long rekel), my husband answered “sure, when it’s cold he’ll wear long johns”. After such answers, the yentas should/will get the message.