End of breastfeeding

My baby hasn't gained any weight in almost 2 month but went from 6 mo to 12 mo clothing. I think I have to formula feed her now. My heart hurts.

She will feed from me for over an hour and unlatch and cry and cry. I'll give her a little bit of formula when she does this and she downs it. I just dont think I'm producing like I used to. I've dont stuff to get my supply up, but it just wont go.

We do baby lead weaning so she gets table food at normal meal times. She eats so much then too and will still be hungry.

I dont want to be done breastfeeding. But I'm so worried about her.