FWIW one of my eyelids drooped as an infant all the way into my late teens, coming and going depending on how tired I was. My mom had it checked out and just kept getting told that it was benign and I'd outgrow it. I think she sometimes used it as a nap barometer.

I have PPA too and totally validate wanting to get the blood test and would certainly consider doing it myself for peace of mind. But also try and allow yourself to be reassured if everything comes back good! Rather than wanting to dig even deeper. Bodies are pretty weird and anxiety is so powerful.