Hi Michael and welcome to Mayo Clinic Connect, an online community of patients like you. You are certainly not alone in having difficulty with colonoscopy prep. For this reason, I moved your messages to this existing discussion:
- Failed prep for colonoscopy: What can I do? https://connect.mayoclinic.org/discussion/i-recently-failed-two-preps-for-a-colonoscopy-and-i-cant-imagine/

I did this so you can read past posts that include some helpful suggestions and connect easily with members like @azcyclist2018 @robbinr @mpeters @doolz @astaingegerdm @fourof5zs @asegura.

You may also be interested in these discussions related to motility:
- Having motility issues, may be gastroparesis: Any thoughts? https://connect.mayoclinic.org/discussion/suspect-gastroparisis/
- Is anyone familiar with MOTILITY clinic or doctor? https://connect.mayoclinic.org/discussion/is-anyone-familiar-with-motility-clinic-or-doctor

Have you seen a GI specialists about motility? Have you been diagnosed with a GI condition?