Hi all I need some advice

Recently my fiancé and I agreed to a second child, the only thing is I feel I’m the only one that’s taking it emotionally serious. He doesn’t want to talk about announcements,names or a birth plan no we’re not pregnant as of yet but I can’t help but to over indulge in these topics. I want to buy baby clothes and diapers and any needed baby items he’s not as thrilled. But he said he was on board with baby # 2. I just feel alone on this, am I over exaggerating? I spoke with close friends and they said that I am in fact exaggerating that theirs no need for these topics until I get a confirmed positive but it makes me so sad.