Auto an R22
Only a new PPL so go easy but..
I thought the most critical element to a succesfull autorotation entry is to establish an autorotational air flow up through the disc as quikley as possible. This can be achieved by flaring along with the lowering of collective. Airspeed is the kinetic energy instantly avaliable to maintain or build Nr unlike the airflow from ROD which can take second/s to develop. Which is why we climb at 60nts and not 53nts.
So if Nr is very low and you haven't fallen out of the sky, flaring will aid in restoring RRPM due to reduction in blade drag and an increase in rotor driving force.
But then again is it a realistic situation to be autorotating borrdering rotor stall with an established ROD and not have sufficient airflow up through the disc to build Nr. It seems unlikely to be in auto at a stable low RRPM without it decaying untill stall or RRPM building to normal auto levals. You have either reacted quikly enough or not!!!
More of a question than a statement.
Regards Eyesout