I just wanted to post a reply as I was having the exact same problem. I was feeding to sleep and then feeeding back to sleep at 4am every morning :-[and my DD was taking a full bottle but then wouldnt eat her breakfast til 11am. I knew it was habit as she woke same time. I made decision to stop feeding her at 4am and instead used a pacifier. My DD is not much of a crier so I did not need to pick her up, just go in, put hand on her chest, pop paci in her mouth and say ssh until she resettled. First night I did this 4 times from 4 til 6.30am.
Second night I did it twice. Third night I did it once, but she was still waking at 4am.
Night before last I dropped her dream feed as she was pressing her lips together so tightly in resistnce to it it seemed unfair to try and force it on her. When she did take it on previosu nights she would only take 3oz. She slept until 6.30am. I did same again last night and she slept until 6.30am again today.
It definitely works so be persistant. If your LO cries alot then do PU/PD or shh/pat depending on what works best for them. But the less contact the better I found. I dont speak to her, look her in the eye or pick her up, just put paci in mouth and put hand on her chest until she stopped squirming, then just sat and waited til she dropped off.
Hope Im not speaking too soon but it appears to have worked, as in space of a week she now goes til 6.30am, I occasioanlyl hear her wake between 3-4.30am but after a few minutes she goes back off to sleep. My persistance has taught her that there little point in waking up now as she gets nothing from me for it and fingers crossed she will keep it up.