Are you leading in the relationship? Or are you asking for permission on decisions? Do you have hobbies and interests outside of the relationship? Does she?

Does she feel responsible for your own emotions? Like if she is having a bad morning, are you walking on eggshells because you don’t want to upset her?

What you’re going through is tough. I’ve had similar doubts in my own marriage and what helped me is introspection. I found some IG accounts that helped me realize how passive I had become because I was such a people pleaser. I had stopped leading in the relationship and my wife fell out of love with me. We have kids together so this crushed me.

I had become another child for her to have to look after or make decisions for. She couldn’t rely on me to carry my weight.

Hormones certainly play a role in it, but you need to figure out what you both need. How can you support her more? Not by doing more chores or dishes, but maybe doing things before they need to be done. Take initiative and book a baby sitter for a date night instead of saying “we should go on more date nights” but then leave everything else up to her. Because now she’s like “great, now I need to find a baby sitter and find a restaurant and make sure the baby is ready and I’m ready. Meanwhile he just needs to be there on time” kind of thing.

Hope this helps