Mayballs,

Don't push to the point of overstimulation...learn to recognize the early tells of impending overstimulation and take a few minutes rest before you reach that point.

My body always gave me some early hints, once I recognized them I was able to slow down for a few minutes. I found it took literally 5 minutes of rest if I caught it early as opposed to hours when obviously overstimulated.

As Mark says be patient.

Bud