Thanks for sharing your situation LTPF I hope it helps you to let others know.
I think you got a good piece of advice from OTWO. Your doctor is required by your insurance to monitor your liver functions because any change could mean your life. Taking your wife's medication could do you irreversible damage. Tell your Dr. immediately what has been going on. He's heard it before and will know what to do.
I work with a woman who's husband has been playing this same game with his Dr. and now is on life support and all of his organs are shutting down. He continued to think he cold treat himself by cutting back, extending sobriety goals and postponing treatment, figuring that somehow his situation was different and not all that bad. They will be pulling the plug on him next week at 60. It didn't take long for the dominoes to start falling and there was no stopping them once the began.
You don't have to tough it out alone. Anxiety is hellish but it can be overcome. Until then your Dr. can prescribe medications that will deal with your anxiety and won't wreck your body like that solvent known as alcohol does. You must be honest with him or some other Dr. immediately so they can help you.