I have a 3mo DD who's never been a great sleeper, but used to nap on me most nights and then sleep 11-2. 3-5. 5 onwards on me and I could deal with this.
Now it's so hard, in the evenings she'll nap lightly on me, but this will be interjected with crying, restlessness etc so I have to keep walking her around. I have a bath/bedtime routine that's usually from 6-7 where she'll fall asleep feeding but will wake up as soon as I put her down (even if I wait as long as an hour) . I've tried to put her down at different times 6, 7, 8, 9, 10, 11pm etc and it's the same. Occasionally we'll be lucky and she'll go down from 11-2, but this is rare. She then wakes up every hour through the night unless she sleeps on me.
I know all about the 4th trimester etc, but as she's now 12 weeks, I thought it might be getting better, not worse 😓