I'm so sorry, I just saw this, thanks for checking in.
Today is Day 5. I'm cautiously better. My neck can move almost as much as a normal person, and neck pain is considerably lower. Head pain is about the same level it usually is but weirdly keeps moving around. I like to think it's battling the steroids in a war of some kind. ;) I've been getting stabbed by an invisible sword that goes clear through my head and into my shoulder on just one side a few times an hour, but each attack is very brief, ~10 seconds. They're kind of like ice pick headaches except the "blade" is larger and the stab goes much deeper.
I still can't lift anything remotely heavy or look down more than a minute or so w/o a pain flare that lasts several hours, but I expect that will get better, too.
Thankfully most of the steroid side effects seem to have cleared up. Unless I just jinxed myself, of course.