Maybe I am not the right person to address this. I did sip in the beginning, but now I just drink regularly. Not like I did before surgery probably, but normally I think. I don't guzzle or gulp things down, but I drink in a steady down stream flow.

If that makes any sense at all. Had I just sipped here and there, I would have been very dehydrated. Oh well, everyone is different.
I hope you get the answer you need. I just know what works for me. I try and water load or iced tea load before my meals so I don't eat so much.