<human>: I am preparing for colonoscopy for tomorrow...my instructions said to drink the PEG SOLUTION (1/2 of the solution) 8 ounces every 15 minutes which I started at 4:30 pm, solid foods  from 1:00 pm on been drinking plenty of water and clear tea. I have not yet had bowel movement. The instructions say to to take the balance tomorrow morning at  approximately 3:00 am. should I take more since I have had no movement at all even though I was done taking half the solution by 5:30. I do use a feeding tube rather than drinking.
<bot>: It is normal for people to have delayed bowel movement habitually after taking PEG solution and there is nothing to worry about. I can assure you that the bowel will move sometime during the night or early morning. It is mandatory for you to have a fruitful colonoscopy that you have a clean bowel for which you must proceed as you are told, else you will end up with a suboptimal colonoscopy which will not serve the purpose.