No, if a glide descent you want the speed back so bring the power back first and hold the attitude to get the speed back, if a cruise descent then bring the power back as required and let the nose go down straight away with secondary effect (though then selecting correct attitude for speed and trimming) to keep speed, either way I would use PAT. I was actually taught (and teach myself) use PAT for ALL except TOC, where you need to be APT (because you need to leave power on to get the speed up) and I think this works well.
If you use APT at start of descent you are having to push against the trim AND the aircraft will accelerate as well which is not usually wanted. Entering both a climb and a cruise descent in practice though you are actually doing Attitude and Power simultaneously.