Englishal,
Some-one wrote don't fiddle with the power with which I agree-but it will require adjustment.
However, this is the only parameter which is going to need changing as you descend. Without going into density alltitudes, the wind is going to change strength and direction.
Once the aircraft is configured for landing and trimmed to the correct speed then all that remains is to find the correct power setting. You can fly down the glideslope with tiny adjustments of the stick but as soon as you have to maintain any force then you need to adjust the power. The speed range is -0/+10kts.