He wants to take things slow and I am ok with that, but...
He may be fine and he may stay on a good path the rest of his life, I hope and pray he does.
But I would take it very very slow, just as he suggested. Right now he is focusing on his recovery and that may be more important than anything else, his life may depend on it.
Take a read around, knowledge you may find here may help you in days ahead.
Hugs