Hey and welcome
I'm a recovered alcoholic (since 2010 but with many relapses). I actually wanted to reassure you that a litre of bourbon in 4 days isn't that bad. I used to live with a guy who drank a 750ml bottle a day - 500ml at night and 250ml before work! I saw him last year and I'm amazed he's still alive, but men's bodies do tend to cope better with alcohol (I ended up in ICU with pancreatic necrosis).
So even though 250ml/day is enough to make you feel pretty bad it's not a huge amount. Good on you for stopping.. You do get to the stage where you don't even think about it most days
Gypsy x