How do we convince others to socially isolate?

We recommend speaking with individuals in a calm and clear manner. This is not the time to strain relationships with your family, friends and neighbours. Highlight the facts about the virus, offer reliable resources, lead by example, and try to find common ground with people. Remind people that this isn’t just about getting an infection or ensuring the health care system doesn’t get overwhelmed. This is about every aspect of our lives: the economy, our social lives, education, sports, mental health etc. Everything.

This article and this article may provide more advice on this topic.