Everyone is different. What works for some might not work for others. Keep that in mind.
If the 2114 is hitting what you're aimimg at, at 20 yards and under and flies like a dart without any side to side movement on it's way to the target with the 175 grain point weigth, I'd wouldn't be subtracting any point weight.
But, for experimentation purposes, if you have some 150 grain field points, put one on another 2114 arrow and then shoot both arrows against each other for a comparison in flight and where each impacts on a target.
If you've got three 2114 arrows and some 125 grain field points, put a 125 grain field point on a third 2114 arrow and then shoot at a spot on a target from 20 yards and this way, you can compare all three arrows against each other in flight.
With all three 2114 arrows having different point weights, all three arrows usually "won't" hit in the same place on a target when shot from 20 yards. A 20 yard distance always tells the tale for me.