3 weeks PP

When does everything start to feel normal? I'm getting 3-4 hours of sleep a night (not all together) because of my pumping schedule. I wake up, change a diaper, pump, feed, get baby to sleep...by the time he's sleeping, I've been up 60-75 minutes. Every 2.5 hours. He doesn't sleep well during the day. My house is trashed, I am hardly eating. I'm so worried about leaving our house, I don't want to get sick from lack of sleep.