At 2+ months I'm over the excitement. I guess I'm in that "flat" phase, too. Going to bed sober and waking up sober are routine now.
That said, everyday is a learning experience. I learn things about myself, others, the world. I see things that I need to work on. I'm learning to deal with things rather than just pushing them aside without examination. It's a pretty steep learning curve, and I'm glad to be doing it. But excited? Pumped? Nah, just trying to get on with my life, really.
I don't mean to be a downer. Not at all. I find living sober to be interesting and (at times) challenging. Well worthy of my best effort. I will continue to celebrate my sober milestones, as they signify a growing distance between where I am and the insanity of where I was. But, at least for now, I just don't feel the excitement.
I do, however, feel something that has been somewhat elusive to me in recent years: hope.
