Thanks, Mamas (maybe papas?) for your thoughts. I can't think of anything specifically that happened when the eye-blinking started, except the bangs in his eyes... any maybe the dry heat starting up for winter. We bought a humidifier, but he's still blinking.
We used to give him magnesium (epsom salts foot baths and supplement powder) for sleeping before we figured out his gluten intolerance. So, maybe he is deficient! And also, we have not been giving him a multi- anymore, so the B6 could help, too.
I'm trying both! Thanks so much and thanks for the link. You Rock.
Please let me know any other thoughts anyone has!