5 1/2 month old won’t sleep at night

Ka

My almost 6 month old does so good during the day with naps. But as soon as it’s bed time, she won’t let me lay her down and if she does, she only stays asleep for like 30 minutes. She’s slept in bed with me the last week bc she refuses to sleep in her crib all of a sudden. Even cosleeping, she is still up very often.

Is there a leap around this age or something? I’m worn out!!!! 🥺🥺🥺