oh the red flags.....
HE bought a bottle of gin or at least put one out for show and then had YOU return it.
he did ONE appointment and has another in two weeks. not tomorrow, not like it's important or critical but 14 days or so from now.
people who get blackout drunk every two weeks or so are not LOW RISK. if one is drinking to black out, they have consumed so much alcohol that their brain shuts down and is no longer capable of recording memories. this is NOT normal!!! and not ok if "only" every two weeks.
you are looking hard for any signs of "better" and there really isn't much there yet to celebrate.
is he drinking tonite?