How much does dad help?

How do couples out there share the parenting duties? I’ve really struggled with my husband about this. I’m a stay at home mom but through the week, I have my daughter from 5:00 until her bedtime around 6:30. He takes “night duty” from about 9pm-5am and she gets a diaper change maybe twice in that time. My husband let’s me sleep in until 8 on Saturday and Sunday but again, I have her all day those days too. He seems to think letting me sleep in, should mean he has the rest of the day to himself. Which is so frustrating.