Hi luigimms,
I think you're doing the right thing....
The length of time you take the clay depends on you and how your body is responding to the clay. I first got on the Calcium Bentonite Clay (CBC) to detox from the medications I was given for a hip replacement... that was a year ago, and I am still taking the CBC, I haven't stopped. I used the clay even during the 2 week MMS program we did a few weeks ago ... I just took the clay at night before I went to bed (5 hours away from the MMS) It helped to transport toxins out of my colon that the MMS was creating, and kept my bowel movements going, and solid.
In general... try to work yourself up to a fully rounded teaspoon of the clay for EACH time you take it. Taking the clay always on an empty stomach, an hour away from a meal (right when you get up) and take another dose right before you go to bed. (on an empty stomach, hours away from your last meal)
Also.... ALWAYS take the clay with room temperature water (8oz) never iced or cold water.... and hopefully you are waiting 4-5 hours to go to bed after the last meal.
Hope this helps,
Clint