My 13 yo has been on Concerta and high doses of fish oil for seven years to keep her Concerta doses as low as possible. We do notice when she doesn’t take her meds, her teachers complain every term about her focus and concentration. We added melatonin to the mix to help her sleep at night, and my concern was more pills to treat symptoms as well. Her diet is regulated to assist the Concerta as well.
Everything makes a difference, and with the onset of puberty we are constantly slightly altering the total treatment to find what works best this week.
Your concern is real, but sometimes treating symptoms helps. Good luck. 😀