Hello and welcome.
Your story sounds a lot like mine.
I was a beer drinker, too. Until it got worse. I drank the same amount as you and had the same thoughts. 'Hey, it's been four days, I can handle it'.
Soon back to drinking the same amount again.
Then it started drinking in the morning. All day and night until I passed out.
By then, I was buying two shooters of whiskey on the way home from the liquor store. Just to get things started.
Then it was vodka and beer. Same. All day and all night. This went on for ten years. It's progressive and it sure was for me.
You're not alone. It took me help from AA to finally quit and it's been over six years since I've had a drink.
I wish you the best. And just remember, you never have to drink again. It is possible. At the end I was a seemingly hopeless drunk.
Now I'm sober one day at a time.