Hi! Our son who's 10 also has Chronic Vocal Tic Disorder and I too have felt the crushing emotional rollercoaster and the fear as school approaches etc. We have had some really good results with a good multi and eliminating wheat, dairy, ALL artificials, soy and some other foods we have found as triggers along the way...but he still tics, much less and the waxing and waning is less severe but I don't think the fear really ever goes away, it can become dormant in good phases and come roaring back at the first rise of a new tic or waxing period. The only thing that really helps me is remembering that since changing his diet etc. he is in a far better place than he was in 3-4 years ago. Not to mention generally it seems to upset me more than him. You seem to be setting up a good plan of action and I really wish you the best and hang in there...this stage of looking for triggers can feel very overwhelming especially changing food choices but there is a good chance you may see positive results. I think when I stopped expecting big miracles and started recognizing the little steps forward I began moving into a healthier place, that's not to say I don't still have emotional crashes anymore, it's just less and I've learned to not take it so personally, my advice: do your research, try to look for triggers, change what you can, stick to it and then widen your focus again...sometimes we get tunnel vision and all we begin to hear and see are the tics, and everything focuses around the tics, and our moods are controlled by the tics and everything else becomes secondary. I know I've been there but the good days do come too.
Short thought I saw your son was 12 is he gaming more because it's summer? I can tell right away with our son when he's been playing longer at a friends because the high pitch squeal or repetition when watching TV later...just a thought. Chlorine in swimming pools can be a big trigger. More easy meals in the summer usually means more wheat and artificials and dairy etc. Just some ideas to consider...
Best wishes,
megan