Slow=Low

Assuming controlling trajectory usually means lowering ball flight. The simplest way is to take one or 2 more clubs and swing slower than normal. This brings down the ball speed and backspin rate.

There are also setup changes such as leaning more to target foot, playing the ball back in the stance. This tends to steepen the downswing which sometimes adds spin and causes “upshooters”. Experiment on the range to see what works best for you. I’m gonna continue to take more club and “swing with ease into the breeze”.