Does anyone else get so overly sleepy but aren’t able to sleep?

Sometimes. It happens if i have had a lot of stress or anxiety during the day.

disabled veteran and insomniac here, 2-3 hours here and there is usually all I get, and rarely when I need it the most

Yes. Everyday.

im a fully fledged insomniac if that helps

I've been getting that a lot just lately. I don't know if it's the hot weather we've been getting recently.