Hello Sovereign,
My RAH has not been capable of really restarting our emotional and physical intimacy in our marriage. He is 17 mo sober. He is ACOA. I wouldn't be surprised if he has abuse he has buried in his history too.
Personally, as a partner of someone so emotionally shut off, I think a counselor to work on these issues In a focused way would really help unblock and deal with it. Unpack the memories, work through things, see what small things trigger you keeping 'shields up', and delve into the pros and cons to slowly dismantle this emotional wall. Do it for you.
Of course I can't make my RAH do such a thing, but if he were to take such a bold step, my heart would really jump for joy. Recovery is truly two pronged and there is a spiritual side to it. I wish you well emotionally reconnecting.