Drink the olive oil at once or over one hour??

I'll be doing the flush tonight for the 1st time and was following Hulda Clark 's regimen. However she says to drink the olive oil/juice concoction within 5 minutes, which might be difficult. The regimen on sensiblehealth.com says to drink 1/4 of it every 15 minutes, finishing it withiin one hour. Can anyone tell me pros or cons to either of these? It seems to me that spreading it over the hour may help with nausea but will it be as effective?
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