DS is now 9 months old and in the middle of...everything. I would say he's in the middle of a Wonder Week...but it's also working on standing and cruising, teeth, etc. Putting him down in his crib at night has been taking on the shape of an Olympic event (if reading books, singing, and bouncing a wriggling sleep-fighting boy were an event) as I attempt to get him drowsy, and then put him down in the crib *preferably* awake and then pat/hum/shush/whatever it takes. When I go to bed, I take him with me and we co-sleep (makes night-feeding easier, which I honestly don't mind, if we're talking 2-3 per night, depending on whether you count a "dream feed" between 9:30-10 at night).

I would be interested in trying to let him "stay down" in his crib...but also am worried this could result in more frequent night wakings due to separation anxiety...or whatever developmental milestones are supposed to make 8-11 months such an undesirable time for sleep training or "nudging".

Did you try to transition your older infant to sleeping in their own space? If so, was it successful, despite what the "experts" say?

ETA: For fun, a poll!