Trying to Sit Up

MacKenzie is trying her best to sit up without any help or support.  She's really close, but is still wobbly...she will sit for a few seconds without any support.  The other morning, I had her in the bouncy seat while I was getting ready for work...I looked over & she was sitting up in the bouncy, so I grabbed my cell phone to take a couple of pictures (I figured if I went to get the good camera, she wouldn't be sitting up anymore).  I think before long she will be sitting up all the time without any help.