My best friend has gone clinically insane

I (28F) have a best friend (26M) and we met 8 years ago and instantly clicked. It was almost like a soul mate connection just without the romantic and sexually aspect. He’s been my rock for 8 years through my own struggles with addiction and mental health and I’m stable now. He has saved me from killing myself at least twice.

He went insane 2 months ago after we did an acid trip together for our birthday. We both use acid recreationally alone and we both find it really helpful for our mental state initially, it helped me come off drugs and turn my life around. This was our first time doing it together but we had done it alone at least 5 times each. A few days later he disappeared. He sometimes disappears when he’s down but I just felt in my soul that something was wrong. I spoke to all my friends and they told me I was worrying too much. Two weeks later we found out that he had a psychotic break. I have worked in medicine for 5 years and I have never seen anyone go that crazy in my life; talking in tongues just completely insanity. And I know I shouldn’t be using the term insane and crazy, it’s just the only way that I’m coping.

He has had 2 sections since and went to psychiatric ICU. Hrs been crazy for 2 months now with a few days here and there of normality. He’s currently in his flat being crazy waiting for a court ordered section. He keeps not taking his medication and drinking. He has no money and I’m trying to be his legal appointee in order to apply for it. This is all so sudden. As a result my work has deteriorated and I’m losing my job. Im trying to hold myself together. They believe that he’s likely schizoaffective but I know realistically he will never be the same. I feel numb to the world. My soul mate best friend, the man I knew would be in my life until the day I die, everything just changed. I feel like I’ve completely lost him. I miss him so much. I know nothing will be the same. The longer this continues the higher likelihood he will end up in long term care. He’s never hurt a fly in the time I’ve known him and he’s helped so many people in his life. I also feel guilty that this started with an acid trip with me, although he supplied the tabs and would have done them anyway

He also has a big family history of mood and psychotic disorders. He was not drinking when he went crazy but is drinking now. He smokes weed every evening