😫 My daughter barely nursed all day! And at bed time she didn't want to nurse at all!! I was planning on breast feeding until at least 2 years old... should I be pumping to give her milk in her sippy cup now?

Also I've recently started giving her prune concentrate and peach nectar to help her poop. Both are really sweet and I'm wondering if having sweet things to drink has made her not want milk anymore... I can't stop giving her those things because if I do she won't poop. So I'm not sure what to do. Suggestions?!