@nativedyme, I moved your question about preparing successfully for a colonoscopy to this existing discussion:
- Tips for successful colonoscopy prep https://connect.mayoclinic.org/discussion/another-issue-regarding-colonoscopies/

You might also review the tips in this expert blog:
- Colonoscopy prep: make it easier https://connect.mayoclinic.org/blog/take-charge-healthy-aging/newsfeed-post/colonoscopy-prep-make-it-easier/