Update on lazy SO

I made a post about my mid 30’s SO being a couch potato and never helping me clean or anything. I spoke to him last night again about please helping me around the house and that I’m tired of always cleaning his pee stains off the toilet, etc, etc. I spoke calmly but firmly and told him it’s taking a toll on me. It’s like the 30th time we have this conversation in our 2 year relationship, no joke. He always says “Okay, I’ll help more”. Well it’s 4:30 pm and again all he’s done is sit on the couch and be on his phone. I just can’t. It’s like he doesn’t care. We have a newborn and I had to ask him to please hold her while I wash dishes and tidy up. I love him so much but I don’t know why he’s like this. Yesterday when I brought it up he closed his eyes and then gave me a “not this again” look of frustration. If anyone I’m the one who should be frustrated. I’m so fed up that I just want to cry right now.