I’d consider double checking your physical day-to-day routine. For example, I notice nightmares take place in response to physiological and environmental changes for me. My dreams tend to be more vivid and uncomfortable (or nightmareish) when I overheat when sleeping. Eating too late, or foods that could raise your blood pressure (like pork) after a certain time can do the same.
Considering that Paragon is processing as you sleep, particular cells could, in theory, be heating your body as a result of ongoing healing. (It brings to mind discourse around the immune system, autophagy, and inflammation responses). Perhaps 7 minutes is working optimally for you, but you need to adjust some things to optimize your sleep/comfort.
I’d test out those few ideas first prior to reducing exposure if you are unsure. If you do intuitively want to reduce exposure, all’s good because you’ll still be getting input from the sub.
Best of luck 
