Shrinkrap, in hot weather they grow FAST. Have you thought of setting up a camera?
Mine seem to grow 3 inches PER DAY. Not kidding about this.
I am reminded of the prophet Jonah,
(Jonah 4:5-6, King James Version)
5 So Jonah went out of the city [Nineveh], and sat on the east side of the city, and there made him a booth, and sat under it in the shadow, till he might see what would become of the city.
6 And the Lord God prepared a gourd, and made it to come up over Jonah, that it might be a shadow over his head, to deliver him from his grief. So Jonah was exceeding glad of the gourd.
In my Children's Bible the picture was of an enormous pumpkin. I think it's more likely it was a vine that covered Jonah's shelter, but the vine grew amazingly fast.
Nice that you are weighing them. You are diligent with your watering, I see. Leaves look very nice with no mildew spots.