How do I tell him?

I'm almost 9 months pregnant and my husband is overseas. He'll be here in a couple weeks for the birth of the baby but recently we've really been having relationship problems but I don't think he even notices. When he first left everything was fine. We talked frequently, sext a lot, and even had skype dates but things seemed to changed after the 6 month mark. He switched platoons and has made some new friends and stays busy all of the time. We don't talk much anymore but when we do it's never very significant. It's usually just "good morning, how was your day?" "It was good. How did you sleep?" "I slept well. The baby's kicking a lot." "That's good, I love you but I need to go to sleep.". I don't feel like I'm talking to my husband, I feel like I'm just talking to a friend. We haven't had a good sext conversation in over 4 months and whenever I try and initiate one it always just fizzles out. I don't know what to do. I want to talk to him about it but we barely ever talk for long and I'm afraid if I say anything he'll get upset with me and just drop the subject because I've tried to bring it up a few times before. I can't wait for him to get here so we can see each other in person but we won't have any husband and wife time because all of it will be spent with the baby. What should I do? How do I tell my husband that we are lacking romance and quality time in our long distance marriage?