Sleep Deprived

I think I’m starting to resent my partner. He’s always complaining about him having “insomnia” or not getting enough sleep because of the baby but he sleeps ALL the time. I’m the one who doesn’t get any sleep, she has started waking up in the middle of the night and I’m the one who gets up then I’ll turn around and wake up EVERY morning to feed, change, & play with baby while he sleeps until her first nap which isn’t until 1:30-2:00 & I try so hard to take a nap when she does but as soon as I start dozing she magically wakes up or I might be doing work since I’m in school. He wakes up & will go to the bathroom where he’ll spend another hour & 30 mins. I hate how he’s able to get up and tend to himself & not worry about the baby .. I barely get to eat until afternoon hits. I’ve asked him to help more, I’ve asked him to get up with baby in the morning & he’ll do good for a week and then just stop. I asked him yesterday when’s the last time he’s changed a poop diaper & he said last week (our daughter’s bowel movements are regular) like why is he like this? These past few months he just did a big switch and we’re expected our 2nd in two months. I’m so frustrated and tired, I could cry.. being a mom is the hardest thing I’ve ever had to do.