Most of the stats come from media outlets reporting on singular cases, and most of the articles on the subject are op-eds rather than scientific studies. It does seem to be more common, but overall data is unfortunately very hard to come by.

The plural of op-ed anecdotes is not objective data, but I can give you some jumping-off points:

https://www.usatoday.com/story/opinion/voices/2018/09/05/mom...

https://www.cnn.com/2015/04/13/living/feat-maryland-free-ran...

https://www.theatlantic.com/national/archive/2014/07/arreste...

https://www.cbsnews.com/news/texas-mom-accused-of-leaving-ki...

https://www.businessinsider.com/teen-bans-curfews-malls-them...

https://scholarlycommons.law.wlu.edu/cgi/viewcontent.cgi?art...

https://le.utah.gov/~2018/bills/static/sb0065.html

https://www.nytimes.com/2018/03/29/well/family/utah-passes-f...

https://www.thedailybeast.com/the-coddling-of-the-american-p...