The leaves have yellow spots which might turn grey at some point. They also have small white eggs in the bottom side.
What is the likely culprit and how can I remove it or help my squash recover.
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It's hard to tell from the blurry picture, but the eggs look like eggs for a squash bug.
I had some on my pumpkins this year and they killed several of my plants until I started catching and killing them. Hope that helps. Good luck.