How much to maintain a 0.10-0.12 buzz?

I wish I could feel like this all the time. No anxiety, and a boost of confidence. I have a hand held breathalyzer and my sweet spot is 0.10-0.12. Anything after that is too much, anything before that is not enough.

How can I maintain this buzz? I don’t want to be drunker than this, but I don’t want to be less drunk than this, if that makes sense. I can still function normally (for the most part) but life doesn’t suck so bad