I don't lose if I have more than 2 or 3 mich ultras in a week, although I can have 3-4 glasses of white wine a week instead and do OK (though it's pretty rare for me to drink that much in a week). 2-3 beers a night winds up being a lot of empty alcohol calories and carbs over the course of a week. Try cutting it back to one nightly, and perhaps switching away from beer -- I personally find it's easier to have one glass of wine than one beer anyway.