I did tell him early on his drinking was making me rather uncomfortable, but as he made no sign of slowing down my message became clearer and louder as time went on, it has slowly turned into a weekly thing.
So why do you stay? He’s clearly not changing and you clearly saw his drinking as a problem early on and this is what your relationship has become all about, his drinking and you complaining about that, marking a calendar to show “proof” about his drinking and what you already know.
Sounds like it’s time to put the calendar away, find the door, walk through it, and end this dysfunctional unhappy relationship.
You want him to “change” who he’s always been, a drinker right from the start. I always say if you can’t accept someone for exactly who and how they are today then you have no business being in a relationship with them.