Advice for supporting a friend diagnosed with Schizophrenia?

A friend I met online (I’ve never met him in person, yet he’s become a good friend) recently told me he has/had been diagnosed with Schizophrenia. He told me this after talking about being depressed, seeing f*cked up imagines (I assumed he meant in his imagination, but maybe they were hallucinations), feeling a lack of desire to live (but telling me he’s not suicidal)... I try to be sensitive about when encouraging him to talk to things to a professional, encouraging him to take prescription medication (he’s been researching and experimenting with natural remedies) and to be sensitive with the problematic journey of getting help- his trouble communicating with the Drs, his lack of desire for prescriptions. All coupled with him not telling me EVERYTHING, for example, I think he IS on meds and IS seeing a therapist, but that is not clear.

I guess there’s not much I can do other than to remain his friend (he’s brilliant and an incredible artist and musician), encourage a positive perspective on living life despite his struggles, and encourage him to continue with professional support as he finds his way.

If anyone has any experiences they can share, anything I should watch out for (not that there’s much I could do if there was an emergency)? Any advice?