Maybe she is filling up on too much milk, because at 13 months she only really needs two breastfeeds or two bottles.
Id probably start the tough love on her Fiona, only 2 breastfeeds or 2 bottles(not sure if you were still going to wean her), and then just give her food on her tray and if she doesnt eat it tough, and try again next meal, she wont starve herself, I think shes just being a monkey

because as you said, she was a really good eater to start with.
I agree with Deb though, she is still young. Bella has milk in her sippy cup AM and then water rest of the day and then milk in her cup at night. She has a snack, then lunch and then a snack, and if she doesnt eat it, tough.
Alot of her food gets thrown on the floor lol.
I also give her what I know she loves at every meal, like banana, raisons, along with the sammies or what ever shes having for dinner, that way I know shes eating something.
She refuses to be spoon fed, she spits it out, so I just dont go there, she feeds herself.
Edited by Sheza