ditto,
Below are some books that you should checkout. I believe the Bents are born again Christians. Michael is a regressive-started putting on his sister's soiled diapers when he was young, before puberty.
He also provides guidance on the issue of Chistian's acceptance of AB and DL. His take is that there should be no issue about AB/DL.
My feeling is that those who have issues with DL are the ones with the problem. After my surgery last year I was incontinent for awhile and had to wear a diaper. At my post surgery checkup the doctor asked me if I had to wear a pad.
"A what," I asked.
"You know, a pad," wink, wink.
"Do you mean a diaper," I asked.
"Well, yeah, only most people don't like to call it that."
And that was a doctor who dealt with older men wearing diapers every day.
Check out
Adult Babies: Psychology and Practices: Discovering the structure, motivations and needs of Adult Babies by Michael Bent
So, your teenager is wearing diapers!: Understanding why some teenagers want to wear diapers Paperback – December 9, 2016 by Rosalie Bent
Coffee with Rosie: why does my partner want to wear diapers? Rosalie Bent
There are others