How about to bli neder (bli shevuoh?) be ready for Shabbos five minutes earlier than you need to?
I’m all for the not talking during davening! What I wrote above is just another suggestion.
Ideally, if you can, don’t talk at all, even between aliyos. Just smile and nod. After a while, it gets easier.
A Machsom L’fi is an excellent idea.
I heard a shiur by Rabbi Zev Smith. If I understood correctly, it’s certainly a good idea to avoid speaking about really unnecessary things on Shabbos. Try, for half an hour, to avoid frivolous, meaningless conversation – and enhance your Shabbos.