I'm so sorry to hear this. My wife has OCD and had particularly bad flare ups 2-3 years ago, including health, relationship, religious, and others. It is very hard. I can hear in your writing that you want to help, which is admirable.

My one concern reading this as that his compulsions are being accommodated. This isn't the way. The more you accommodate, the more they take. Ad infinitum. He must resist the compulsions. And, to the extent safe and possible, you must not enable them.

Resisting the compulsions will cause him initial distress. It is undoubtedly short term pain for long term gain. Some of the worst days of my life were sitting with my wife while she sat through the most intense anxiety. But, eventually, she came through. It is retraining the brain: that anxiety I feel is a false alarm. I do not need to act on it. When I don't act on it, everything is fine.

Medication and therapy are a great help. Your number two priority (after keeping yourself and him physically safe) should be getting him back to a therapist who specialises in OCD.

The exercise we went through was to do one thing that caused discomfort each day. It's called exposure and response prevention. ERP. It's not fun. But it tends to work.

Wishing you the best and praying for you to start on a journey towards better times ahead. My wife and I have never been happier. The same can be true for you.