Trigger Warning- disconnecting from reality

I have a boyfriend of 4 years who was just diagnosed. He likes to disconnect from reality for days and dropped out of college to lock himself in his apartment to talk to his spiritual guide. This comes in waves of once a month and includes not showering, cleaning, or sleeping. 

He said his guide told him to refuse all medications and depend only on herbs and things from the earth to help him get through the day.

He suffered a near heart attack and consulted his guide instead of calling 911. He once broke into my house because his guide told him I may be in danger (I have Epilepsy). I was perfectly fine. He said he doesn't hear voices, but eats only what his spirit says. He has told me he is healing his body this way (high blood pressure, sleep apnea, obese, and brain lesions).

He told me he asks these spirits for help with what he should do every day (unemployed) and they tell him to get in thr car and drive a certain direction, play certain lottery numbers, and so on.

He refuses all medication. He said his therapist is not qualified to help him but will not get another. 

Does anyone else have thoughts like this and how can I help him, if at all? I think he will actually end up killing himself by swallowing a ton of vitamins and I need help. 

Thanks