26 weeker.

Hi. Does anybody else have a 26 weeker? My daughter is approaching 9 months and I'm starting to worry that she is behind... even tho she is a preemie. She seems to be skipping steps... Like, she doesn't roll over yet, but she tries to sit up. She's eating solids and she is very healthy, but people are getting on me saying she needs to be doing more (rolling, crawling, learning how to walk) , and honestly it makes me feel like crap. We do tummy time, she bounces like crazy in her bouncer, if you hold her she wants to be sitting up the whole time... Im doing what i can. Shes just taking her time. Also, what else can I do to help her practice her crawling and rolling? Thanks mommies.