Going by the book,
Unreliable airspeed in cruise will invite the necessary memory items FIRST. As unrealistic the values look, before jumping to the tables, it has to be concluded whether the airplane is in trim (still or gotten out of trim)
If in trim still, tables can be refered to with a/c flown in primary flight control mode with pitch/power etc.
If not in trim, the recent step added is - disconnection of PRIMARY FLIGHT COMPUTERS. (This enables a direct mode of operation of stabilizer and other flight controls)
Probably then jumping to the tables would be better.
In short -
Inducing a memory item value of QRH to a a/c already in a steady state won't be
Desirable as the a/c would probably be maintaining very accurate pitch/power however if things get out of hand due to changing airspeeds (& it most certainly will) then restrictimg to the memory item values to begin with won't be a bad idea.
That's just my opinion
corrections welcomed