Today we are at 56 days until we cut the pumpkin off the vine. Typically, after the first week of September, I get very little growth, because I'm battling frost. So I probably have about 40 days of growing left, based on past experience. I'm on day 43 since the pumpkin was pollinated so give or take, we are at the half way mark.
Right now I continue to spoon feed nitrogen and potassium on a nearly daily basis and I rotate in some phosphorous from time to time as well. Lately I've also been adding in just a touch of micro nutrients as I don't want the plant to bonk this second half of the season and need to make sure it is getting everything it needs and doesn't start to become deficient.
As I watch the Olympics I'm reminded that often it is just the little things between Gold, Silver and 10th place. If your plant becomes deficient in any on nutrient then pumpkin growth is limited. The reverse is also true. Too much of most nutrients and pumpkin growth is limited. So the ideal isn't actually putting the pedal all the way to the floor. It is just a sliver above the floor where everything the pumpkin needs is available, but not so much it starts to inhibiting uptake of other nutrients.