Sleep training?

Has anyone done sleep training? Especially to cut night feeds?

My girl is 6 months, EBF, goes to bed around 6-630. She wakes every 3-4 hours for feeds.

I know she really doesn't need the feeds and that they're probably more of a comfort thing now. Shes able to fall asleep on her own in her cot if she's relaxed enough. But when she wakes up during the night she just cries until we pick her up. Any Advice on what I can do?

I desperately need my sleep back, I know 3-4 hours is good compared to some babies but I don't deal well with broken sleep 😭