Our baby is almost 8 months old and has just started sitting on her own. Yesterday after nap I went to get her out of her crib and she had her arms on top of railing, I said "looks like it's time to move you down!" I told my DH and he thinks we wait since she's shown no since of actually pulling herself up. When did you move down a notch on the crib? After they pull up or showing signs of doing so?