Help! Cluster feeding+No sleep!

Yasemin
My baby is 11days old today and for the past couple of days he has been just feeding for hours then sleep for max 30mins! It's exhausting. He is always trying to poop right after feeds too. I donno if it's normal for newborn to get no sleep at all. I'm pumping and supplementing because I got flat nipples. I didn't get the chance to have a calm baby so I can try feeding with nipple shield. He gets angry and knocks off the shield so I'm trying to pump as much as possible even tho I got no time to go to toilet or shower 😫 Help me! Is it gonna get better?