Reducing power in anticipation of GS capture is vital to a stabilized approach. If you’re still at cruise when GS captures, you’re going to fly out of the cone and be way out of position, forcing a Go-Around.
I fly the TD version of the Skyhawk a lot, and by experience and some reading of real world use, a 30 percent torque setting by the time I’m at FAF is an excellent starting point. Adjust slightly during Final for any wind effects. At two miles, Flaps 1, then at MDA, disconnect AP, reduce power and pitch slightly for the flare.
In short, watch the diamond and adjust power, because AP is controlling pitch once GS capture is made.