Dean bottle feeds catatonic Sam

Hey!
I have been looking for this fic for a long time, and I apologize that I can't remember when I read it. I think it takes place after Ruby is killed, but I'm not sure.

What I remember is that Sam is catatonic and Dean somehow gets the idea to bottle feed him. I think he starts with milk, then chicken broth. He eventually moves up to feeding him toast and Sam gets better. I remember the end is Dean and Sam seeing a bottle (can't remember if Sam placed it somewhere deliberately) and Sam thanking Dean.

Any help would be greatly appreciated!