The National Association of School Psychologists has additional guidelines about talking to children about COVID-19 at:

https://www.nasponline.org/resources-and-publications/resources-and-podcasts/school-climate-safety-and-crisis/health-crisis-resources/talking-to-children-about-covid-19-(coronavirus)-a-parent-resource

Here is a list of additional resources:

Susan David: “The gift and power of emotional courage”

https://www.youtube.com/watch?v=NDQ1Mi5I4rg

Susan David: “How to be your best self in times of crisis”

https://www.youtube.com/watch?v=Xgyh0juINNI

Olivia Remes: “How to cope with anxiety”

https://www.youtube.com/watch?v=WWloIAQpMcQ

Kati Morton: “Dealing with coronavirus anxiety”

https://www.youtube.com/watch?v=dMOhYAubXG0

J. Priest and K. Fitzke: “Family counselors’ tips on managing stress at home during coronavirus pandemic”

https://www.thegazette.com/subject/news/health/family-counselors-tips-on-managing-stress-at-home-during-coronavirus-pandemic-20200325

Raychelle Lohmann: “Coping with anxiety and depression during the coronavirus pandemic”

https://health.usnews.com/wellness/for-parents/articles/coping-with-anxiety-and-depression-during-the-coronavirus-pandemic