It’s a rollercoaster, it gets more rewarding when they start to smile and interact with you. Right now you are all he knows and all he wants and it’s intense. My son’s always been a terrible sleeper, like waking every two hours would be a good night kind of sleeper. Just this past week he’s started waking only twice a night, and he’s 11 months, so hang in there and hopefully you’ll be more lucky in the sleep department! Honestly it’s nothing you are doing or not doing, especially at this age
It does get better My little girl did this around 11 weeks she went from sleeping at normal times with one or two wake ups to staying up till noon and sleeping all through the day or only going down for a few hours it took a week or two but she got back into a regular pattern she’s now 16 weeks and goes down at 1am and sleeps through till 9/10am still late but I’m a night owl so works for me 🤣 for the time being I highly suggest getting a family member or your partner to watch her and let you get a nap during the day so the nights are easier my mum would take her on walks as she would just sleep in the carrier it might be worth a shot?
Aw, wish I could give you a hug… hang in there, it really does get better. I found the 12-16 week period particularly hard too… having just started to get a little more sleep after the crazy newborn period, it all got snatched away by the next development leap… as I was going back to work too. Same as you, baby didn’t want her daddy, just me. There were nights I thought I might collapse from exhaustion… But it does get better, I promise. They have these leaps where their routine gets thrown, but they settle back down again. Just take it one day at a time, it will pass. I hope you have a good friend to cry to when you need them - it can help just venting out loud.