Hello girls! Suggest how to detach from the breast ? My daughter is 1…

Hello girls! Suggest how to detach from the breast ? My daughter is 1 year and 9 months old, pregnant for 9 weeks. I can't take it anymore ? During the day at kindergarten, at night straight sucks from the breast like a pacifier doesn't let go. If I remove it, she will cry. I can't sleep at night because of this, and because of that my nerves are shot. With the first child, it was quick to detach. Help anyone who has encountered such a problem.