Fiancé hasn’t told anyone about our engagement

So here’s alittle background: My fiancé & I were dating for 4.5 years when he proposed to me. We don’t argue a lot, but I will say that a month before he proposed I told him he should move back home to get his life in order (finances, etc.) We we’re living together for a year & our lease was up so I thought him moving back home would give him that push to grow more as a man & I would move into our apartment alone. Well I decided to take back what I said & have him move in with me. A month ago he proposed. I was pretty excited about the engagement seeing he took my feelings & wanted to take the next step. The excitement is starting to fade... I notice it’s been a month & almost no one knows about our engagement. I expressed that I wanted us to tell our parents before we shared it on social media. I told my mother & he STILL has yet to tell anyone. To be respectful to his parents I didn’t want to post/share with a lot of people. Some of my friends know & some of my close family members. I just feel as though it is unfair for me to have to bottle in my excitement & keep our engagement a secret. I have asked him if he has told his parents & he tells me no. He hasn’t told one person. Not even a friend. He isn’t very close with his family, but I know his mother loves him very much. Him & his father aren’t close, but I just feel as though that is your BLOOD! Wouldn’t you want them to know? I need advice because I am completely torn, crushed, confused... HELP!!