Controlling distance out of a bunker can be done in many ways, try all these methods and see which one works best for you
Make a long, lazy, slow-paced swing to create a high trajectory. This gets the ball up high so that it lands softly and does not roll. It is a risky shot, so only play it once you have practiced it sufficiently.
Triangulation is the best way to read greens, read the putt from behind the ball, from the low side and then from behind the hole