Our 'romance' is basically dead and I don't know how to fix it

So this is more relationship stuff than dad stuff but you guys probably get it. My wife and I haven't had sex since like week 2 postpartum (she's healed since then but just hasn't felt like it). We do have a 4-month-old so obviously life is different but like... we barely touch anymore. We're ships passing in the night. I miss her. I also feel like a creep for even thinking about it when she's so touched out and exhausted. Do things get better? When does normal come back? Or is this just the new normal?