https://childmind.org/article/what-to-do-and-not-do-when-children-are-anxious/
https://www.changetochill.org/how-can-i/mindful-movement/
https://www.changetochill.org/activities/
Anxiety Apps (with reviews)
"Treatment providers working with kids who have school refusal will often use cognitive behavioral therapy, which helps kids learn to manage their anxious thoughts and face their fears. While kids who are anxious might disagree, the best way to get over anxiety is actually to get more comfortable with feeling anxious."
https://childmind.org/article/when-kids-refuse-to-go-to-school/