Anyone notice a personality change?

Our son, 6, is on Focalin. 10 Mg in the morning and 5 blaster Mg in the afternoon. We can DEFINITELY tell when meds are in his system vs. wearing off. He still has spirit but is able to regulate so much better. He has co trol of his body and his mood. Needles to say, the meds are doing exactly what they should.

Just one caveat. Without the hyperactivity masking his ASD symptoms he’s now very reserved, shy, and quiet around other kids. Our son was usually the first to stand up and greet anybody new (albeit with no boundaries). Made friends easily, was able to talk to other children for hours, etc. It feels like we helped him regulate in one area but impaired him in another.

Anyone have something similar/any tips?