Hi Guys, I think you have missed the first lesson of any flight training, that to descend or climb you just use the throttles. Changing the Pitch Attitude will increase or decrease the speed.
So you are in the apex of the coffin corner triangle, you can't go slower or faster, or you would go outside the triangle. The only way is towards the middle of the triangle. i.e. Keep your airspeed constant, and just descend.
The descent will happen if you just close the throttles, don't touch the Pitch Trim.
Have I got the job, mr Ryanair?