@ADHDmomma Thank you for the feedback.
@MamaTan Thank you for sharing your story! I have switched my son to Adderall XR 20mg and the tics got better for a while and then came back, just like you are describing. My son, too, had tics prior to being on meds. I have long suspected that this has more to do with stress/anxiety and less with medication, which is a good thing, I guess. Thank you for your ideas. I will try them and, hopefully, something will help. Good luck to you as well!