Ok, shaking is normal if your system is used to alcohol! AKA Alcoholism. Not good!!! That is defenitly a sign he needs to get help or at the bare minimum have a very patient and strong support system. It isnt easy. At the first sign of stress he will want a beer. He needs to be able to do something else instead. He needs to understand that only HE HAS CONTROL OF HIMSELF. You need to understand that too. You will understand why I say that when you start feeling guilty that you arent doing your part, remember, you can not physically force him to stop, therefore, NOT YOUR FAULT! Good luck!