every baby is different. Hope this stage passes soon. Seriously, the older they get, the better they sleep! My older girl sleeps through her sister's crying
My second one has crying spills on some nights, and probably only slept through 3 or 4 nights since her birth. Even though we co-sleep, she still wakes up crying almost every single night. Worst was she woke up at 4 am (I usually go down at 2am) and I had to get up to cuddle and pace around for her to settle back down. Then my older one wakes up at 7am!