My 26 month old DD has recently (3 months ago) become a big sister, and prior to this she slept so well (7pm - 7am every night since she was 6 months old). She hit a regression at 18 months, while I was still pregnant, but came out of it pretty quickly, and for the first few weeks after baby sister was born, my eldest slept great. About 2ish weeks ago this all started to change, and now she seems terrified to sleep in her room. She used to wake up happily and babble in the mornings, but now she wakes up at 5:30am every morning screaming hysterically. She refuses to sleep in her cot for naps, she’ll only fall asleep downstairs with us on the sofa, and at bed time she now cries for upwards of an hour before falling asleep (we check in and reassure her at regular intervals, but we’re wary of creating a sleep association by staying with her until she falls asleep). We’ve tried blackout blinds, white noise, a toddler clock with night light, and nothing seems to be working. I guess I just want reassurance from others who’ve gone through something similar and come out the other end? Does it get better?? Any advice would be much appreciated! :)