IMHO I wouldn't be abusing the trimmer.
If you trim for your initial approach speed, then fly the rest of the way in purely on the stick.
Holding off too high is quite common, often when a pilot has been used to flying a heavier, larger aircraft with more inertia.
The AX is a low energy draggy machine, so a high roundout and flare will rob you of elevator power just when you need it, especially if the CG is in limits but forward.
