Can i dilut/mixe the suprep bowel prep 2nd dose with more water, say 24 oz instead of 16 oz as recommended? I can't bear to drink it again. Also, if my procedure is 8:30 tomorrow am, I'm wondering if I should move up time of 2nd dose to say 2:00 am vs 3:45 amas directed by Dr. Office, since it took 4 hours for 1st dose to work....(5 pm ). I eed to drive 35 minutes to get there for colonoscopy...