Would you recommend the free range kids book?
Follow the let grow account on Twitter. https://twitter.com/LetGrowOrg?t=JwFw-lD6-yGTxF4xsZ_MYA&s=09
Lenore Skenazy's twitter account is a great resource too.
https://twitter.com/FreeRangeKids?t=lUBqLuwlWWfjWuVoGXJSqA&s=09
Lastly, read the Coddling of the American mind by Jonathan Haidt and Greg Lukianoff
Discussion
I haven't read their book, so can't give a recommendation one way or another. One that really helped my wife and I was "Hunt Gather Parent" though admittly our kids are much younger than yours but that one was a game changer for us.
Hunt, Gather, Parent: What Ancient Cultures Can Teach Us About the Lost Art of Raising Happy, Helpful Little Humans https://www.amazon.com/dp/B08CQBB11F?ref_=cm_sw_r_apann_dp_EPZG7DQ6JQK7E6F5F9PN