when you do talk to him, make sure he's sober. make sure you are clear on what you want your message to him to be......make sure to use "I" statements.....such as "when you start drinking at 2 in the afternoon, I <<feel/think>> - and then provide a "solution" - so my options are to avoid you for the evening, stay in the den until you go to sleep, leave and hit a late movie at the mall. i'd like to talk about other solutions with you. i care about you and i am concerned that you may not even realize how much you are drinking on a regular basis now.
or something like that! avoid ALWAYS, NEVER and I NEED YOU TO......
have you ever driven by someone and noticed they had a flat tire? so you slow down to their pace, roll your window down and wave and point like crazy? WHY? it's not YOUR tire right? your car is fine. but their tire is not safe and COULD cause harm to themselves or others. and it's just common courtesy. try to see this more like pointing out a flat tire, rather than a full out intervention right now.