zcos apologies, my post was not aimed at you, but was prompted by what you said. I think MM made a very interesting point about research and agree with others that say you need to find your own way.
You mentioned me having older children, and therefore experience. I do have older children who were great sleepers, then J arrives and turned everything I thought upside down. He was a very clingy baby from birth, and would not even settle in the hospital cribs. He would not accept a dummy, or swaddling, and was in hospital age 5 weeks with bronchiolitis which complicated matters. It took him a long time to get over it.
We tried various methods of co-sleeping, none of which we were happy with, so we tried CC as a last resort. Thankfully it worked, and very quickly, because he and I were both ready.
I read your post towards the end of a dreadful night, and did get quite upset by the mention of the research findings. This was moments after my husband had looked daggers at me for letting J self settle. He felt I should have fed him, but I was confident he would be fine and sleep a bit longer. He did. About three hours longer.
We started CC in the middle of the 12 week growth spurt - I was so tired I could not see this was what it was. I recommend waiting until after. All babies are different, and my big boy seemed to have a strong instinct to be near me. This seems to have passed. He is a different boy now. He was waking every hour to have a snack and sleep with a nipple in his mouth. That was not helping either of us. Last night he did two 5 hour stretches.
I am terrified he will get this germ we all have, but he is much bigger now and better able to cope with things. My temp is not going much below 39 and I feel like I have been run over by a bus.
DD1 still has teeth, but is not well with this bug. DD2 is being a little horror as she is feeling a bit better.