Hi, SHH)
I quit in October, and my birthday was in May.
It wasn't hard to stay away from alcohol because I develop some new "sobriety" outlook by the time.
And spent my BDay just as Dee said - doing things I wanted to do, not being presses with "shoulds" and so on.
It can be quit an exciting challenge - to make a Birthday really special. Not just repeating the same routine year after year. Make a list of things you've always wanted to do but been postponing and procrastinating for some reason. Choose one you can do now - arrange something you've never done.
I spent two sober Birthdays by now, and it's just getting better.
Best wishes to you.