What exactly do you try to accomplish by it ?
When I first performed shank prakshalana to share an example, I was doing it because they said, it will be a huge relief, a great change and purification. I did it and I felt the same. I was having a very balanced and moderate diet back than and also young and impressionable.
So, while I respect and admire your dedication, I have to ask: why ?
I am really interested.