Potty Training Kids in the Autism Spectrum

We have been trying to potty train our son off and on now for almost three years. We honestly haven't had much success with it.  I thought some research might help.  Here are some helpful sites I found:
Potty Training for Children with Autism

Potty Training Tips for An Autistic Child

Toilet Training for Autistic Kids

Autism and Potty Training Techniques: How To Help Your Child Succeed

ATN/AIR-P Parent's Guide to Toilet Training in Autism


I hope these tips will help.  Have a great week!