How can we both heal separately? Any successful get-back-together stories?

Hi friends, coming up here with another post after a few weeks of painful deliberation. I'm trying to follow the steps and actively choose what's best for me. My Q has been suffering from a """functional""" drug addiction for 3 years, and while he claims to be determined to get better, I feel like the past 3 years are weighing heavily on me and might require a bit more than just mental detachment to heal. Also, I am not 100% sure yet I would be willing to give us another go once he is healed, as I'm in a state of dissociation and functional freeze that isn't allowing me to process the trauma and understand what I want long term.

All this being said, I considered moving out for a few months while we both figure things out. (Well, I decided, but every day feels like a painful marathon to get past his nice words and declarations of love and back into my self-awareness and beliefs that this might be better for me). Living with him turned me into an empty shell last year, and he's clever enough to know what to say to convince me he is doing better. I think I need to base myself on facts instead and maybe physical distance could help?

What I am not sure of, is how can this "break" work. Is it better to really get out of each other ways, not speak, no contact, or should we maintain moments to check in with each other? Is it really possible to get closer again? Or is it possible to really heal separately while living together? Does anyone here have success stories or tips?