Tics are one of the side effects of
too high a
dosage. Therefore, you are right in reducing the
dosage. If the prescribing doctor did not suggest a reductions of the dosage or a change of medicine, you are right in finding another doctor. If you reduced the dosage on your own and your son is doing better, good for you. If you do not want to call your doctor again, and until you see another doctor, just call the pharmacist that you use and confirm that you can cut the pill.