Careful with the turns if Nr is very low.
If my memory of PPL aerodynamics is OK, the scenario is something like this.
2 very undesirable things could happen which would make things worse.
1) Increasing the load factor is great on a flying blade, however, the stall speed of the blade increases with increased load factor as angle of attack is increased, so an overenthusiastic turn could turn a barely autorotating blade into a catastrophically stalled one. Thrust reversal due to flaring also increases angle of attack and stall speed so is risky at very low Nr.
2)The coning angle increases with load. Coning angle will already be high with low Nr. Increasing coning angle is good for Nr up to a point due to conservation of angular momentum, however, if it goes too far... things break.
Perhaps the thing to do with very low Nr is to very slowly push the stick forward to increase airspeed and decrease angle of attack, hence lowering the stall speed of the disc. This also decreases drag on the inboard, stalled area of the blade which becomes smaller. The other main problem with low Nr is high sink rates which increase angle of attack unless the disc is tilted forwards to turn sink rate to airspeed. possibly another reason to push the stick forward.
I think at very low Nr the usual rules go out of the window. This is complex.
Come on you aerodynamics people. Discuss.