Why should we let him drink less, if he wants to drink, let him drink!
Don't worry about your man, drinking is one of his hobbies, and if you block his hobbies, won't he be annoyed? As a man, he doesn't drink, is he still a man? You're disciplining him too much!
It really doesn't matter how much he drinks when he's happy and how much he wants to drink! Don't waste your breath to get serious with him, he doesn't know how to care about his own body, you care about so much why, drink in the hurt is not your stomach, drink after vomiting blood is not you, get up in the morning with a splitting headache is not you. What are you worrying about? I'm not going to be able to get a good look at this," he said!
He is still young and can't listen to anything, so you shouldn't put all this energy into him to talk to him. If his heart always closes his ears, it won't matter how much you say.
When he gets a little older, fatty liver, gastroenteritis, or even a perforated stomach, none of this is your fault, it's only his own fault for being young and bent on not listening. Or one day he drinks until his blood pressure goes through the roof, and you push the wheelchair, walk up a hill, then let go of the wheelchair and watch it go down in a straight line and go you! That's when he gets as far as he can roll. How cool is this, you don't have to take care of him, and you can go find a stylish old man to square dance with you. No more worrying about whether he'll drink or spit up blood, or cleaning up the dirt he's thrown up in. The moment you let go of his wheelchair, it's all out of your hands!
You really don't have to persuade him not to drink, he loves to drink, wait until he is old, he will know how painful it is. You're worrying about him, but it's pointless if he doesn't take care of his own body. Only when he himself experienced this pain, he will understand your good intentions.