I know that what you're going through is really hard but it gets better.
You need to urgently get him to see a Psychiatrist and once he has a diagnosis he can get the correct medicine.
I was married for less than 2 years when my DH had a full blown breakdown. At some point his mind was almost lost, wouldn't recognise me in his psychosis. He was at the hospital psychiatric ward for 3 months and it was a slow process after that. They put him on some medicines, gave him mindfulness training and after a year he was well enough to go back to work. He has Bipolar 1.
I wouldn't have had the heart to just divorce him on his worse times, he is a person, it is a disease as much as any other, and it is not his fault as it is not your husband's fault.The psychiatrist made a lot of emphasis on the fact that it's a disease like any other, it's a chemical imbalance.
Thanks God after that stint in the hospital he has been very well, you can't tell he has that diagnosis. He is the sweetest and most caring person I know. He has adhered to treatment, never misses a dose and now only has an appointment every 6 months with his GP.
The doctors do tell me that maintaining him that same environment at home helped him recover. He has taken a Mindfulness training that has helped him cope when he's stressed. I can immediately tell if he's unwell, take him to the GP and they alter the dose of his medicines but that has only been 2 or 3 times in 10 years.
Now we are almost 12 years married and wouldn't have done it otherwise.
How long have you been married? Is anyone on your family or his family that can help look out after DC while you take him to his doctors?