Sorry that you are going through this too. I went through this when my dear daughter was about 6 weeeks old till when I gave up and put her in yao lan when she was about 9 weeks old. You are not doing anything wrong. I think it is just part of stages that the babies go through. Hang in there! My dear daughter doesnt sleep till 11pm too these days.. They keep changing their sleep pattern. As long as they are feeding.. contented (my dear daughter used to scream her head off before sleeping) and growing.. your is fine.