Real talk about losing my marriage identity

RANT WARNING. My wife and I used to have actual conversations that weren't about poop schedules and sleep regressions. We used to go on dates without planning logistics for 3 hours. Last week I tried to talk to her about something I cared about and got through exactly 2 sentences before she fell asleep on the couch. I love my kid more than anything but I'm terrified we've become roommates who coparent instead of partners. Anyone else dealing with this or is it just us?