I hear you. I do take pregnenolone, and can't tolerate taking more of it, yet still benefit from supplemental progesterone. I've been interested to experience benefits from quite a high level of supplemental progesterone in the beginning, but over time my need has become less than half of what I originally needed. I expect that trend to continue. I use it twice a day, and if the daytime dose makes me sleepy in the afternoon, or the nighttime dose makes me wakeful, down the dose goes.
After a lifetime of paradoxical responses, I appreciate the simplicity of progesterone.