My 10 month old LO has always been a good sleeper. We've never had to sleep train him and he's always gone to bed without a fuss... until now! For the past week, as soon as we put him in his crib, he'd prop himself up to stand and then he'd cry/scream until someone picks him up. Even if we put him down drowsy, as soon as he hits the crib, he jerks awake and wants to stand.

It's been taking 30min+ to get him down. What to do?!