I also did not realize that my husband was drinking in secret for about two years. I had invested a significant amount of time, energy and money in helping him figure out his "mysterious medical condition" but as soon as I discovered it was alcohol, I asked him to leave our house and detached myself from the situation until he stopped denying the problem and sought professional help on his own.
Please don't put your life on hold for him. The more you learn about alcoholism, the more you will see that there is nothing you can do for him until he decides to help himself. Once he takes steps toward recovery, there may be ways for you to support him, but not at the expense of your healing and happiness. Good luck!