Definitely I’ve been absent from the forum for a while unaware of your mom’s passing. Please accept my most belated condolences. There’s no respite on SMI. For the most part you are one of those parents that put the difficult situation in such a perspective that is very assertive and sometimes funny. I know of the eternal days, I agree 
that SMI is not for the weak; I know of unaccomplished dreams, of the sadness of seeing our loved one’s uncertain future.
I don’t think there’s a better place than this platform to visit when the tough gets tougher and find comfort knowing that some caregivers experience worse moments and difficulties. Regarding the issues your son brings about, I can say that it can be worse: today my husband took our son to the Mall and he invited our son to lunch after walking a little bit, when they were at the table one of the waiters and owners asked my husband if he was related to my son and told him that he wasn’t welcome there because other times he has been yelling to other customers! My son told him that he was lying, I know how it goes with him, I was told the same thing years ago when I picked him up at a restaurant and the owner was watching when I was getting there to tell me exactly what my husband was told today, he screams obscenities to the people wether he sees them as someone else or hallucinations.
This is a hard journey. And I was pondering about the possibility that this is a lesson to learn to love: in good and bad times!
Easy to love them when everything is ok, hard when the mental health challenges are reflected in their behavior and our patience is put to the test.
I think this forum is awesome. Everyone is kind and understanding.
I definitely thank you for sharing your insights and experience through it all.