Relationship Advice?

So, a longtime friend of mine and I have decided to pursue a relationship. We tried like two years ago but we were both incredibly awkward about it. 
Now, we're less awkward but still pretty awkward. He's leaving for basic training in April, so we don't really have a lot of time. 
Essentially, I need advice on how to quit being so nervous and awkward around him. 
I really do like him and we've talked about our feelings and what we're comfortable with multiple times but we're still just kinda weird around each other.