I used to teach an opposite approach. Higher A/S around 70kts, RRPM bottom of the green, just above the horn. During the flare, LOWER collective fully, hold until you are about to fall thru, level, settle then pull.
This accomplishes several things; first you can flare more aggressively without ballooning up ie quickstop, which reduces your ground run. Most of the time you will be practicing this on a paved surface, but real world slower touchdown speed will keep you from rolling over. Second you are guarenteed to see a large increase of RRPM so you have more to cushion with at the bottom. Thirdly and most important for low inertia systems is that with zero pitch you reduce your rotor decay between leveling settling and pulling.
I've taught this technique to 20+ students(including DPE/FAA examiners) and it works like a charm in the 22/44/300. Only difference is the 44 requires less aggressive flare and in the 300 you don't have to play with the lever as much. The only other variable is how high you can level and still get away with a smooth touchdown. 22 being the lowest <8ft, in the 300 you can get away with 10 maybe 12ft and the 44 15-20ft as long as you wait to cushion.
DISCLAIMER: This technique only works with 2 people in the aircraft. The reduced weight of solo ops requires you to maintain higher RRPM throughout the manuver, because RRPM will not significantly increase during flare.