There are regularly threads started on MN about months of broken nights, breastfeeding and having babies sleeping in bed with you.
I'm not trying to be goads or unsympathetic, just trying to compare styles of parenting young babies. Maybe it's a generational thing as I'm 52. All 3 of mine were breastfed from birth for 3 weeks then bottle fed.
They weren't rocked to sleep and were often put to bed at night awake.
None ever co slept with us. They all went through the night from a matter of weeks old and all were good settled sleepers. I'm not saying our way was better but it seemed a lot simpler.