I cleared myself out with about 5-6 flushes... starting with quite a large volume of stones. But then there is the yearly or twice yearly maintainance program... or for those who forgot or otherwise neglected to maintain, there's the doing 5-6 all over again 7 years later program... whatever the case may be. 50 flushes sounds like a lot. If you have stones i bet you will be delighted with what one good flush expels:).
But yes, if you're going to go through the trouble of drinking 4 or more ounces of olive oil, it makes a lot of sense to me to do the prep work. If i am going to feel week for a half day, i don't want to purge half the stones i could have purged.
I have been prepping for 3 days and have another flush planned for tomorrow night. Best wishes with yours.