my boyfriends wont grow up& im 6 months pregnant!

My boyfriend and I are due to have our first baby in December. We have a beautiful 3 bdrm apartment all ready for us! Couch, beds, tvs living room all set up! Literally just sitting vacantly. (The apartment is in my grandfathers house) My boyfriends parents just moved 1hr 10m or so away and he wants to move with them because we keep arguing because hes so ABSENT in this pregnancy, hes so uninvolved. I feel so alone 99% of the time. When I see him we eat and he goes to sleep on the couch then leaves to go home. Its so frustrating. I feel like im going to be a single mother at this rate. We just started couples therapy because things are getting that bad! We sometimes wont talk for days on end. I hate the thought of having him over an hour away which he says is only “45” minutes when its 1hr 10m on navigation. I just feel like its SO unfair for him to move all the way out there when im here pregnant. He refuses to move in until “hes ready to leave his parents” i just wanna scream GROW UP! Hes gonna have a baby very soon and there seems like no hope at this relationship. I know people get stressed and scared its just so unfair. I dont know how to convince him its a good idea we move in together so we can prepare for our son and build our relationship in a healthy way in our own space. I truly dont know what to do.