Welcome, @Synapse 🙂
To connect with carers of a person with schizophrenia, you can post your post above on SANE's Friends, Family and Carers Forum . Title the post with the word "schizophrenia" in it. That way you might get some advice from people who have been /are in your situation, hopefully... There is also a link at the top of the page here, under "Forums Community" and under "Forums Home" a bit further down the page too.
To connect with schizophrenia sufferers in their 30s (although I wouldn't limit the age) you can make a new thread with the title along the lines of "Looking for schizophrenia sufferers" and you might get some responses.
You can also type "Schizophrenia" into the Search bar above for threads on that topic and you might find people there too.
A handy forum tip is if you type @ and then click on a name in the drop-down box, that person will get a notification and won't miss your reply.