It is a pleasure to see the crops in your garden that are still growing. Living in a South Asian country, the climate of my island is completely different (more cold) and I can see courgettes and bitter gourds in your garden. Sunlight is usually essential for the harvest of a crop. Therefore, if some plants have small plants covered with leaves, you can expose the small plants to sunlight by cutting off the leaves. Adding crushed eggshells to the courgettes to change the color of the fruit brings beneficial results.
In the past, tomatoes have not grown well in my garden either. So, a month ago, I added compost fertilizer mixed with cow dung to each tomato plant. The tomato plants have grown very quickly and are now producing fruit. I will show you that in my next gardening activity. Several gourd vines in our garden grew well and over a period of three months, we obtained large gourd pods for consumption. After three months, the gourd vines marked the end of their life, but they produced enough fruit, albeit in a melancholy manner. If you can provide more sunlight to the fruits and leaves, you too will be able to obtain a good gourd harvest.
Thanks for the tips. And it's good to hear you have had a good harvest!