I made 1300ug dmt pills and the effects did not last that long. Any thoughts?

I made 1300ug dmt pills. 1300ug for each pill. I took one pill, waited for an hour and then took another one. <br><br>So in total I took 2600ug. I had a very strong body high and visuals and a strong out of body experience. It didn't last that long though. 20-30 minutes. <br><br>I'm trying to understand why the effects didn't last that long because I read that 1300ug is supposed to last a couple hours. <br><br>Any thoughts?