In slow flight regimes, you find the controls reversed - throttle for height, stick for speed.
So the way to proceed is to get the aircraft into the on-speed AOA by trimming in level flight while reducing the speed to achieve stability, then leave the stick alone in pitch, and use the throttle to establish the desired rate of descent.
Watching the available videos on YouTube will give you all the necessary information regarding the correct approach pattern and in particular the correct altitudes.
The ball will only be visible close in, and also only if you are close to the correct height.