Don't worry, I made that mistake too with my first!!!
I think you need to work on things step by step. In my experience, interval checks work for night wakings when a baby can already self settle. So they know how to do it. By the sounds of it your daughter doesn't yet have this skill and might need more support from you in learning it. Probably what's happened before is you've gone from a lot of input to get her to sleep straight to none, and she's got too worked up. So you'll have to try to do things more gradually. You might still end up at interval checks, but you'll be more set up for it to work.
Does she still have 2 naps or has she transitioned to 1? How many hours does she sleep in the day, at night, and what time does she go to sleep and start the day? I am asking because if she's not getting enough zz overall then she might be in a sleep debt and will find it harder to sleep. It's like a vicious cycle. If this is the situation then I would suggest putting her to bed earlier, but depending on your answers!
Once that's covered off, I would suggest you work on reducing your input to getting her to sleep at bedtime. You will need to stay with her at first. Your first aim would be to reduce rocking. Is she in a cot or in your arms? You might be able to downgrade from rocking to patting. Then from patting to a hand on her. Then try shushing. Then sitting in a chair next to the cot. Then move a bit further away. Moving the chair further towards the door is a method of sleep training called gradual retreat.
So step 1, reduce the input at bedtime.
Keep doing whatever you need to do to get through the nights at first, to make sure you're supporting her to get enough sleep or you'll end up in a right mess.
When she is better at getting to sleep at bedtime, her nights might improve by themselves. If not, then you could try the same process or introduce interval checks.