Re: No milk but 18mo still trying
Welcome to the forum!
If you're okay with letting your LO nurse, she'll be able to bring your milk back even though it's dried up. It might take a little while, depending on how much demand you get from your toddler. More demand, and it will come back faster. Less demand, and the process will be slower. If you want to increase supply and your toddler isn't doing the job, you can always pump, and try some supplements (oatmeal, fenugreek).
If you're ready to move on and let breastfeeding end, you have 2 choices. The first is to be tough and just say no. That will mean some sad, difficult interludes for you and your toddler, but it will get the job of weaning done. The second is to allow your toddler to nurse, but to set some limits on the nursing so that you don't end up sore. A few seconds of nursing is unlikely to hurt, so you can do something like say "Okay, you can nurse but ONLY until I finish singing 'Twinkle, Twinkle Little Star'" or "You can nurse, but when I count to 10 you're going to be done and we're going to go brush teeth/get a snack/read a story/whatever".
Just a quick caveat: if you're pregnant, that could explain the sore nipples and could preclude you from getting any supply back.
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"