I've namechanged for this because I'm embarrassed.
My baby is 3 weeks old (second DC) and has barely slept since birth and when she does it has to be with one of us holding her.
We've got a next to me crib with a sleepyhead that I bought in a desperate attempt after reading reviews but hadn't helped at all, we've tried swaddling, different blankets and clothing, sleeping bags, white noise, walks in the pram (she hates this the most as she always wants to be tilted upwards) and car rides. I just don't know what to do anymore.
While my partner was on paternity we took shifts overnight so we both got some sleep but now he's back to work he takes the baby while I sleep for a few hours until midnightish then I take her in the living room so he can sleep until he has to get up for work at 5am (he doesn't ask me to do this but he really needs some kind of energy as his job is very physical).
She's breastfed and feeds and feeds and feeds the whole day and night, she'll fall asleep at the breast and come off herself then wake within minutes to go back on for the entire day. We've tried formula tops ups and expressed breastmilk. I am wiped out. I cry all the time. She took almost 3 years to conceive after being told we couldn't have children due to partners low sperm count and my unexplained secondary infertility and we were ecstatic to be pregnant and so excited and now I'm wishing I never fell pregnant at all.
I really need advice on what to try next.
(Co sleeping is not an option as DP had a close family SIDS death while co sleeping annoying as I think she genuinely would bloody sleep if she was in our bed)