My DS dropped to 1 day sleep around 10mo. But not every day. Some days it is two, but generally one only.

I go by the rule, of 1/2 hr in the cot, and see how he goes. If he is not asleep in that time, I get him up and back to play, and know that it will be a one sleep day. He is in a dark room, with a soft toy and a book for that time, and I do put him in a sleeping bag so if he drifts off to sleep he is warm, and I can come and add a blanket later.

I personally thought it was too early to drop the sleep, but at day care he wont have two, as there is too much to do, and so at home, we play it by ear. I moved his bedtime up to 7pm from 8pm to cover for the lack of day sleep, but he generally sleeps a solid 12 hrs at night, so I am cool with that.

Good luck hun. Sleep is such a hard thing.... It does my head in all the time... xo