Hey Snoopy
I have read your story and one thing that sticks out at me is your daughter. Like every problem it's good to tackle one thing at a time. They say sleep deprivation is like torture. I think a good place to start is getting you more sleep which will help you in many ways.
We had many sleep issues with our son. Mind you he was just over 12 months old when we tackled it but it sounds very similar to your case. We ended up going to a doctor and it was the best thing we ever did. Basically it is controlled crying but the way he explains why you need to do it is very logical. We had tried leaving our son cry previously. He would vomit and we would abort the mission. Basically we stuck through it after seeing the doctor - yes he vomited, we quickly bathed him, changed his sheets and put him back to bed and continued. In a few nights problem solved. I definitely recommend looking into it. It restored our sanity.
Now it's not addressing your relationship directly but it's a major negative energy draining ball on your life which you can fix quite quickly . It's a start to turning your life around. Get more positive energy in your life like exercise, eating well and being more focused on yourself and not your partner and you'll be well on your way. Yes, that means be less needy on your partner. You can do it. Start by focusing on yourself for a change 🙂
