How much to drop the nose?
However much is required depending on
(a) what the present angle of attack may be
(b) what the pitching characteristic will permit .. ie one may need to revert to innovative practice .. pitch and power oscillations, roll, whatever
Modest pitch decreases such as 5-10 degrees nose down may be suitable for an immediate response in some aircraft but will be woefully inadequate if the angle of attack is 40-50 degrees or so.