Fussy as a hen with one chick American British informal
To be extremely concerned and overprotective
My mom didn't allow me to go out at night when I was in high school because she could be fussy as a hen with one chick sometimes.
When the final examination comes close, I am often fussy as a hen with one chick.
It's just a small presentation, you don't need to be fussy as a hen with one chick.
To protect someone too carefully
To keep optimistic or have hope that something positive will occur and simultaneously prepare for a negative outcome
All I can do is hoping for the best and preparing for the worst.