Stacking symlin

Does anyone know how close together symlin can be taken? I’ve recently started taking it, and am still on 15mcg, but not entirely over the nausea w/my first dose of the day. The second seems to be fine. I’m wondering if anyone knows what happens if you take it within 3 hours of the last dose. Also, do you find that as your symlin dose increases, so does your sensitivity to insulin? I’m having a time getting used to the insulin dosing with this.