Hi Abi,
Thank you for sharing your story. I am sorry that you are so worried by your brother’s drinking. It is really hard for you to see the effect it has on him I’m sure.
I work for The Icarus Trust. We are a charity that provides support for people who are having to deal with the addiction of a family member. If you get in touch you could talk with one of our experienced volunteers which might help you, as well as finding out what other help is out there.
You can contact us on help@icarustrust.org or visit the website http://www.icarustrust.org
All the best. I hope that this helps.