Agree with Karin, I understand what both of you are saying, I've not read your other threads, however this man child needs to man up and understand having a baby is life changing, xh and I didn't baby proof our relationship and it suffered, other things as well though, dp and I did better but all relationships will suffer the first year is hard work, bloody hard work, neither of you should be making any rash decisions about things.
We all miss the couple time pre baby but you have to adapt and work together to find a solution, no ultimatums or tantrums.
And you can't just slip back into having sex, it's not as simple, you need to work up to it, for gods sake, start of holding hands on the sofa or a cuddle. If he's in pop out for a coffee when little one has a nap in his pram, the amount of times we did that and sat with a paper to read in the arly days, just having a conversation.
I'm lucky do is amazing as a dad and does a lot, how much does your dp do? From the sounds of things not an awful lot, he needs to understand to put more effort in then, to give you time off, to allow you to remember you're a woman not just a mums partner is a vital thing, when's the last time he looked after the mini one so you could have your hair done? And if it's a case you're fb still, you can feed have your hair cut, and he can potter around in the local area, incase you're not finished for the next feed being due.
Please don't take this all on your own head to fix, you can't. He has to understand he is not the center of the world any more, the amazing little person you have created is. And to be quite honest he should damn well be showing you every single day he can that he thinks you're the most important person second to your child, as after all without you there would be no child, does that make sense. Hope it does anyhow.