HWD
What causes a wing to stall? Angle of Attack.
Throwing in tight turns at low altitude in order to recover from too much height on the approach to a forced landing is not the answer. It increases your AoA and will require an increase in airspeed if you want to remain safe. If the landing area is tight excess airspeed on touchdown is the last thing you need.
Consider the S turn itself, you are lined up on the approach but too high so you turn away, let's assume you are way too high so you turn 90 degrees. Your landing area is now alongside the aircraft and moving backwards. To regain the approach you now have to turn 180 degrees and backtrack to the approach path then turn 90 degrees back on to the approach. By turning 90 degrees you have given yourself another 270 degrees to turn, during which you are going to lose a lot more height. Yes you could cut the corners but if you do that you are moving yourself closer in to the field. Believe me a sideslip is much easier. You stay pointing at the runway, you can stop it any time you want without leaving yourself with additional turns to do and it doesn't increase your airspeed.
When you do your renewal why not choose an instructor who can teach you the skill? (Maybe not one concentrating on his ATPL)
Mike