Strokes gained would be a big help but I don't have any such data at this point. So I took what stats I have entered in GHIN, and slammed the last 42 rounds, starting March 1st until yesteday, into a spreadsheet. I'm trying to see where the improvement is coming from. Below is a photo of the summary data by month. My index is down almost 4 points over that span. The scores reflect that. The column for 95 - (2 x GIR) is the commonly accepted estimate of what you should shoot based on GIR. The Variance next to it is what I actually did versus that projected score. In my experience, if one goes low, that means a good short game. And the opposite is true. What do you see in the numbers? I'll give my thoughts, feel free to disagree.
The GIR trend is slightly better, but not much? Could almost be noise. I'll be generous and say the trend is 0.5 improvement in GIR, which could be 1 stroke.
All putting numbers are slightly better, but they add up. 0.2 fewer putts per (times) 7 GIR would equal 1.4 strokes. 0.1 fewer putts times 11 missed GIR would be 1.1 strokes. If so, that's 2.5 strokes from putting.
But some of the non-GIR putting numbers are coming from better chipping, I know that from my improvement in that area. Maybe half a stroke.
So the best guesses I can come up with:
Tee and approach: 1 stroke
Putting 2 strokes
Chipping 1/2 stroke
There is another 1/2 stroke buried in the noise.
Agree overall that putting was my big winner? Or do you think otherwise?
edit: I see yesterday's round got included in the screenshot. Oh well. Also, the column ordering is a little goofy because I added some later in the process.