My DD#3 was prob around 8mths when she dropped to 1 sleep. Due to running around here or there, i found it hard to be home for her AM sleep. Resulting in her dropping that sleep quite early if you ask me. She just had the big arvo sleep. Down around 1pm, up no later than 330pm.

I think 10mths is a pretty normal age for them to go from 1 to 2....