Nurses ALL night

I seriously need some help. My LO will be 10months in 2 wks. Here lately LO will suck all night long. Literally. She will fall asleep in her crib for the first part then all of a sudden will be refused to be put down and will come into our bed. From there, my boob has to be in her mouth. If not then screaming and crying starts. She still nurses every 2-2.5 hours during the day and eats purees. Trying to give her real "adult" food but it hasn't worked yet. Why is she doing this? I cannot sleep bc i can't move. Helpppp