Hi Scared, it sounds like you are doing well with your prep. Using a straw really helps and drinking 8 oz fairly fast helps to avoid the taste. You can do this, its really not as bad as some would have you think. The actual colonoscopy is not bad at all. They will give you anesthetic and you will probably fall asleep and it will be all over. I have had 2 colonoscopies and they were pretty easy. The second prep was easier because I first took 4 dulcolax tablets and then drank about half of the gallon of liquid. Good luck, I know you will be fine.