I think its time to lower our crib mattress.
This makes me incredibly sad, partially because it means she is growing way way too fast and also because I'm a shorty and its really hard for me to get baby in and out when its lowered.
She has been mobile for a few weeks now, but more of an army crawl. This week she's been getting up on all 4's and making a few moves in a traditional crawl. She's also been pushing up onto her feet and getting into a seated position from her tummy, she just keeps one hand on the ground for support.
I also saw her pull up onto a toy and then push up her bum (like a downward dog pose).
With how fast she is doing more and more I know its the safest, but ugh my last baby is just growing way to fast!
Here she is in action!

Re: time to lower the crib...
DS had no interest at this stage either, I think she's just eager to keep up with her brother. Kam is stinkin' adorable! No need to rush it, I wish she would slow down a but it goes by fast enough on its own
Ahh okay, thanks. Mine only has 2 levels, so that makes more sense now!
Ours only has 2 levels as well but i can see that she is moving towards wanting to stand, I don't want her to learn to do that in her crib and tumble out. Probably not super likely but if she pulled up now the crib rail would be around her waist. So since she is so active and starting to do these things so quickly its safer to lower it before she can stand.