Amelia Sit up from crawling-New Milestone

Finally finally, my little lazy bum bum is sitting from her crawling position. She is beri different from Amanda. Her development is much slower and til today I still think that she is a young baby despite that she is reaching 1 years soon. Now at 10 mths+, I'm still very worried when she is sitting on her own because she would fall back.

(1) I'm trying (2)Almost

(3) She is crawling fast and there she goes, SIT UP!