But you should do what feels right to you.....I know that for people with pretty congested colons, it might be wise to do an enema as well. Heck, I would take p&b shakes, drink tons of water, and still do a coffee enema. I was very careful to not get dehydrated. But everyone's body is different.
I know I have work to do with regard to cleansing my bowel, so I can take LOTS of fiber and laxatives, and be ok. You may not be that way though, so proceed with caution!