advice anyone please

Hiiii i have been with my boyfriend a while now he has drunk alot of alcohol since we met. He drinks 6-10 cans on a regualar night and if he is going out he can drink double that amount. He dosnt seem to change that much when he has had a drink but i have been concerned for his health for a while but only give subtle hints before. Last night he come to see me and was clearly drunk after a night out and he drove 20 miles to see me in that state. When he woke up this morning he was devastated that he had done something that silly. I always suspected he could be dependant on alcohol but didnt want to nag and tried to make him cut down. After last night he hasnt had his usual cans tonight and he broke down and said he felt ill and felt like he needed a drink but he wasnt having anything and went to bed his hands were shaking and after a while he said he thinks he is an alcoholic and needs help and is going to a doctor this week. The problem is i cant stand to see him like this i dont know what to do he isnt his usual self or anything does anyone know how i can help him through this for the first time in my life i just dont know what to say to him or do

Thankyou Carmen x