I agree with what everyone has said.

I was like you in the beginning with DD2. My DD1 was an absolutely horrible sleeper for over a year. I thought I would try and create good sleep habits with DD2 from the start and had great ideas about her not getting rocked to sleep and learning to self-settle etc. Yeah right! I kept getting frustrated when she needed to be rocked and I couldn't get her to sleep and then I realised I wasn't frustrated with how she was sleeping, that wasn't hard to deal with because she sleeps better than DD1 did, I was actually just petrified every time she had a bad day that she was turning into DD1 and I was going to have all the sleep issues I had with her again. I had to just decide to let go and not worry about it. After all, we got through it with DD1 and we could do it again if we had too. And all of the positive things about gentle parenting far outweigh any lack of sleep for a year or so. So once I realised this I just gave up and went with it and trusted my instincts again and we've all been much happier since. She's not a great sleeper but she's better than DD1 was. She even sometimes self-settles which amazes me because DD1 didn't do this until close to 2yrs old.

So my advice, like everyone else, is just to stay true to what you believe in, go with the flow, and try not to worry