Rough man. If it's Adderall, don't be afraid to split pills, if the symptoms are too high, unless you start seeing a real return of ADHD symptoms. I used to not eat as much when on stimmies, but I ate like 3000 calories every other day so it was fine. That said, their strategy is to build your tolerance, so a reduction will make that process take longer. Therefore, the only other advice that I have is that your tolerance will go up dramatically in like, three months or so, so if you think you can wait it out, I would do so. But if it's dramatically affecting your day to day, most competent psychiatrists would be ok with a moderate reduction if you are still suffering major side-affects.