Lots of water pick lower leafs off so the power gets to the red balls and leave only 4 to 5 bunches on each plant.
I had a problem with Courgettes, the end of 80% of them went rotten before they were ready to pick, after 9 months of growing them, we got 2 courgettes that were edible lol Not bothering with them next year
I like Courgettes but only the yellow ones. They are growing over night and suddenly you have something like that or even bigger.