I’m sorry the new med hasn’t worked well. My 6yr old is always feisty/ somewhat defiant, but metadate and quillivant made him much much worse. You couldn’t say anything to him without him trying to take your head off verbally and sometimes physically. This was our intro to meds and I was ready to call it quits on meds period if that’s what he was going to be like on them!
Switched to vyvanse (different class) and much better. Added intuiniv before the beginning of the scull year and even better, it really smoothed things out for him. We still have our moments but overall much better.
Maybe ask about a different class of meds? Fingers crossed that he finds something that works well. Hugs