There's a lot of back story as to how and why I naively went with the sleep training approach that I don't really want to go into, but I did and now we're here even though I wish we weren't.
Basically my 13m DD now wakes every 30 minutes or so for the first half of the night, literally screaming and it takes 10 minutes or so to calm her down. The rest of the night it's more like every hour although usually only takes a few minutes. It used to be 4-5 times in a whole night and I could just feed back to sleep. She also now fights sleep and the whole hour before bed is just crying (and if I use the words "bedtime" or "sleep" she also starts crying).
Sleep training obviously works for some, not for others. It wasn't for us but now I have no idea how to repair what's happened. Not even co-sleeping works, she still suddenly wakes up in hysterics.
If anyone has any advice on what to do now (if you don't and just want to tell me that we shouldn't have done it, I really don't need telling thank you), I'm desperate to hear.