Mine quit several times, anytime from several weeks and the longest was 13 months, all without actually seeking any sort of treatment, just quitting and white knuckling it. Look up dry drunk. Like others say, he is just in between drinking sessions, hoping to change your mind before you move out. You stay it will only be a matter of time before he will start again. Been there done that several times, stick with your plan. If he is serious about getting sober he will do it even if you aren’t there. Remember, you staying there hasn’t worked so far so why would it be different this time? He still hasn’t started therapy or AA meetings right? And it has been a good couple of weeks since he told you he would start doing some sort of therapy/meetings? Remember alcoholics are master manipulators and this is just another way to try an manipulate you.