But…OP, for some practical advice rather than the bunfight- I have a cosleeping breastfed baby who sleeps great
your baby sounds overtired to me so I would target the daytime sleep rather than the evening
our very loose routine/some ideas
out in the pram everyday at around 10/11 when they are starting to yawn. The motion keeps her going into another sleep cycle. Often if DH has a flexi day or is free then we’ll go get a coffee together at this time. This is lovely.
if I can’t be bothered to go out, pram is set up in the hall and I run up and down the hallway with it or jiggle on the spot
lots of playtime. We bathe together every day with lots of toys and a light machine in the bathroom. Even if I’m doing chores I turn it into a game, give her some spatulas to whack. It’s exhausting but exhausts her. Generally is ready to sleep after me annoying her like this.
if still not asleep then playtime in her cot (only used for daytime naps or baby prison) regularly whilst I potter around or dangle toys over the bar. she doesn’t see it as a scary place and will sometimes fall asleep when playing in it.
when DH finishes work he has her for at least an hour solo. He will grab her and play with her and settle her to sleep. Sometimes she will cry for a first but she has lots of snuggles and never gets so distressed. If she has gone full exorcist, we swap.
we then just let her hang out with us until we go to sleep at half 10/11. She has dinner with us, and because she is well rested and chill from the day, is happy to play on her playmat or bounce in her bouncer whilst we watch a film and have a glass of wine. We all then head to bed together. If I’m particularly tired, I’ll go up after dinner and enjoy snuggling in bed. Sometimes I’ll just enjoy the quiet, sometimes DH will join me to watch something on the iPad or listen to a podcast. Baby still doesn’t go down for the night until 10ish.