I would be interested in learning more potty training. My son is now 4 and he periodically pees in the toilet, but not everyday. He has pooped into his potty, but he seems to be constipated alot which makes that part of potty training quite difficult. He has CP diplegia and has now a kidney disorder, nephrotic syndrome. He got it out of the blue. I have to monitor his urine output everyday. If anyone has any advice about potty traing or how to keep a kid with CP from getting constipated. I push peaches, juice and water throughout the day. Has anyone tried Miralax?