"I knew that he wasn't supposed to be dating within the first year but he was persistent and I promised I wouldn't get in the way of his recovery..."
dear confused...there are quite a few limitations and conditions right from the get go. you say you haven't dealt with this sort of limitation before. have you dealt with dating someone in recovery before?
reach out to as many people as you can.
it sounds to me like you are in a limited, conditional beginning of a relationship with someone who is not "supposed" to be in one and who wants a lot of space, and that his needs for space keep increasing
his need for space is either because "he's just not that into you" (legitimate) or he really needs to focus on recovery (legitimate) or because he is "clearing the deck" (sadly "legitimate") whatever the reason the consequence for YOU is the same...
are you getting what you need and deserve?