Without trying to tromp over anything your instructor might have said...
You'll need a fairly long runway for this. The longer the better. What you'll be doing is separating by time each individual action that is normally done together or very closely together + enhancing your opportunity to learn the correct sight picture.
With your instructor with you, stabilise your approach at ~1.3 Vs and, instead of closing the throttle to land as you would do normally, add just sufficient power to fly S&L above the runway at that speed. The goal is to ensure your height perception is correct so that's where your instructor helps. The other goal is to get you looking far enough down the runway ie towards the end. Doesn't have to be the exact end but it's a convenient point to use to force you to look away from the approach aiming point. If you look too near while trying to fly level you'll over control in pitch and oscillate all the way. You'll eventually start using the point where apparent movement/closure ceases.
Once you get comfortable at flying just above the runway gradually reduce power. I do mean gradually... Just enough to cause you to be able to perceive a sink towards the runway. Use back pressure to prevent the a/c pitching nose down.
You will become able to set whatever sink rate you like by the rate/how much power you remove ie controlling sink with throttle. Chances are you'll touchdown with some power still on. Remember to fully close the throttle after touchdown.
Once you can 'ensure' a suitably controlled sink to a landing then the next step is to gradually prevent the sink by using back pressure/rasing the nose until the all power is removed. Thereafter you'll be in the conventional hold off/float situation but with better judgement/ability to perceive & correct sink.
The next step is to start reducing power before or just as you commence the flight path adjustment from the approach to the hold off.
NB: Given a suitably long(ish) runway this works well if you fly an unfamiliar type for the first time (fly level, then gradually close the throttles sufficient to cause a sink while raising the nose).
Good luck!