Hi - My son began developing obvious tics just prior to his 13th birthday, and over the course of several months they intensified, morphing from one tic to another, never knowing what will be next. They started with the shoulders, then the blinking, some sniffling, grimacing, crossing of fingers, head rolls, etc... Then came the reports from school of lack of focus and grades dropping.
We went immediately to watching the food intake, artificial colors, etc... I went nuts, throwing out food, buying gluten free and all sorts of crap from Whole Foods. We started Natural Calm, B6, and eventually was prescribed Guanfacine by the neurologist.
After months we finally reached a point when my son made it clear I was way more worked up about this than he was and that he's fine. Frankly, I was stressing him out. He hated all of the special food.
To make a long story short, we now do Natural Calm gummies morning and night. He takes a B6 and 1MG of short life Guanfacine morning and night. We watch for artificial colors and flavors and try to avoid, but don't do the gluten and dairy free approach. He plays sports at a high level, so we withhold the Guanfacine on game days, as it can make him a bit tired, and it seems to work for him. As an athlete he tries to eat fairly well. The Guanfacine, even at the low dose, has helped with school. He is comfortable telling people about the diagnosis of Tourettes and even pokes fun at himself. His buddies are for the most part great about it, only 1 kid at school picked on his condition, and toward the end of the school year my son reached his breaking point about the teasing and dropped the other kid. Kids rallied behind him afterward.
He's in a really good place and the tics are under control, for the most part, but are still there. I know there are kids with far worse tics, but I'm convinced that doing just enough without heavy meds to control the tics and getting to a place where my son is comfortable in his skin has made all the difference. This is harder as parents than it is on him.
Anyway, that's our experience.