That's a nice garen, a great mix of plants.

Your eggplant might not be keeping flowers or setting fruit for two reasons that I can see from your setup. One, there may not be enough sunlight. Also, there may not be the right pollinators. You might get around that by hand pollinating the next flowers that come out.

Otherwise, you could try blending a couple of banana skins, letting the mix brew for a couple of days, then pouring the water around the root zone. The Potassium is a necessary nutrient for flowering, and fruit set and retention.

Aso, I'm jealous of your Raspberries! 😆
!luv