How do students typically learn during your in-class meetings? What are your desired outcomes for each class session? What are successful students able to measurably do after a given session?
Do you typically provide content, explanations, or clarifications through lectures?
Do students engage content through large or small group discussion?
Do students learn from each other through student presentations?
Do students spend class time practicing skills or hands-on exploration?
Once you know what student learning experiences you need to teach remotely, decide whether synchronous or asynchronous options suit your needs.