Solicitor who deals with autism

please please could some one help me and my little boy . My ex husband his dad has him every Friday after school till Saturday he come back very emotional angry and upset every time . He also does not speak or communicate with my ex and even though the court had my sons diagnoses in front of him and my ex solicitor and they still gave him over night access. My little man cannot cope with it emotionally anymore.

he was so emotional to night because of my ex so enough is enough I can’t keep seeing him this upset anymore it’s breaking my heart .

can any body point me in the direction of a solicitor that will listen to me and is specialised in autism please