Hi @CAAR2016, It's good to hear from you.
As far as guardianship goes, each state is different in what a guardian can and cannot do. Where we live, only the court can compel a person to be medicated.
There is "Guardianship Board" here. It's made up of a bunch of guardians and lawyers. They oversee the guardianship programs. It is free to contact them and ask questions. They are connected to the county court system in our district and they have been really helpful to me.
I thought guardianship would help with medication. In the state where we live, it does not. But there are some things guardianship does do that are useful. So, maybe there is something like the Guardianship Board where you live. I found it on our County Court website.
Best to you and your son.