Will new XHD springs relax a bit?

I installed XHD springs from Mancini in my 70 Dart and am disappointed that the car sits too high for my liking now. It is 1/2" higher on the right too. Will they relax a bit as I drive it? I don't want to buy new springs if I don't need to. So far only about 3 miles have been put on them. I can relocate the front eye bolt to the upper hole in the spring hanger to get a little lower. Combo is 360, auto, 3.55 gear, formerly a S6 car. Thanks to the collective brain trust for your input.