hi!
ok, what a coincidence. i was just coming here to post a similar question/problem!
my dd is 20 months. she's always been the type to go to sleep instantly when we put her down. but over the past couple of weeks, we've had a few weird naptimes. we put her down for nap at the usual time (12:30). she will rustle around for a few mins, then start crying for me. i give her a chance to settle herself, but i usually know that the chance of that actually happening is slim to none!
so when i go in there, she is always standing up and has thrown her blankie over the side.
we've tried everything. we tried reading her more stories and then putting her back down. i've tried laying on the floor in her room. today i got desperate and took her for a drive in the car to get her to sleep. then once she was asleep, i brought her back up to her crib. she's still sleeping now.
i have no idea what the problem is. she seems genuinely tired at 12:30 (sometimes even before that). this just started out of the blue and i have no idea how to handle it. anyway, i didn't mean to take over your post, but maybe we can put our heads together to figure this out.